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Standard_D8s_v3

staff0rd Jun 9th, 2019 372 Never
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  1. Process ID: 1
  2. [00:00:00] Current: 428, peak: 428, connected: 305, disconnected: 0, rate: 305/s
  3. [00:00:01] Current: 763, peak: 763, connected: 335, disconnected: 0, rate: 335/s
  4. [00:00:02] Current: 1099, peak: 1099, connected: 336, disconnected: 0, rate: 336/s
  5. [00:00:03] Current: 1435, peak: 1435, connected: 336, disconnected: 0, rate: 336/s
  6. [00:00:04] Current: 1760, peak: 1760, connected: 325, disconnected: 0, rate: 325/s
  7. [00:00:05] Current: 2191, peak: 2191, connected: 431, disconnected: 0, rate: 431/s
  8. [00:00:06] Current: 2763, peak: 2763, connected: 572, disconnected: 0, rate: 572/s
  9. [00:00:07] Current: 3434, peak: 3434, connected: 671, disconnected: 0, rate: 671/s
  10. [00:00:08] Current: 4123, peak: 4123, connected: 689, disconnected: 0, rate: 689/s
  11. [00:00:09] Current: 4801, peak: 4801, connected: 678, disconnected: 0, rate: 678/s
  12. [00:00:10] Current: 5485, peak: 5485, connected: 684, disconnected: 0, rate: 684/s
  13. [00:00:11] Current: 6183, peak: 6183, connected: 698, disconnected: 0, rate: 698/s
  14. [00:00:12] Current: 6871, peak: 6871, connected: 688, disconnected: 0, rate: 688/s
  15. [00:00:13] Current: 7598, peak: 7598, connected: 727, disconnected: 0, rate: 727/s
  16. [00:00:14] Current: 8390, peak: 8390, connected: 792, disconnected: 0, rate: 792/s
  17. [00:00:15] Current: 9226, peak: 9226, connected: 836, disconnected: 0, rate: 836/s
  18. [00:00:16] Current: 10066, peak: 10066, connected: 840, disconnected: 0, rate: 840/s
  19. [00:00:17] Current: 10892, peak: 10892, connected: 826, disconnected: 0, rate: 826/s
  20. [00:00:18] Current: 11741, peak: 11741, connected: 849, disconnected: 0, rate: 849/s
  21. [00:00:19] Current: 12575, peak: 12575, connected: 834, disconnected: 0, rate: 834/s
  22. [00:00:20] Current: 13445, peak: 13445, connected: 870, disconnected: 0, rate: 870/s
  23. [00:00:21] Current: 14381, peak: 14381, connected: 936, disconnected: 0, rate: 936/s
  24. [00:00:22] Current: 15366, peak: 15366, connected: 985, disconnected: 0, rate: 985/s
  25. [00:00:23] Current: 16325, peak: 16325, connected: 959, disconnected: 0, rate: 959/s
  26. [00:00:25] Current: 17146, peak: 17146, connected: 821, disconnected: 0, rate: 821/s
  27. [00:00:26] Current: 18143, peak: 18143, connected: 997, disconnected: 0, rate: 997/s
  28. [00:00:27] Current: 19162, peak: 19162, connected: 1019, disconnected: 0, rate: 1019/s
  29. [00:00:28] Current: 20207, peak: 20207, connected: 1045, disconnected: 0, rate: 1045/s
  30. [00:00:29] Current: 21275, peak: 21275, connected: 1068, disconnected: 0, rate: 1068/s
  31. [00:00:30] Current: 22331, peak: 22331, connected: 1056, disconnected: 0, rate: 1056/s
  32. [00:00:31] Current: 23398, peak: 23398, connected: 1067, disconnected: 0, rate: 1067/s
  33. [00:00:32] Current: 24471, peak: 24471, connected: 1073, disconnected: 0, rate: 1073/s
  34. [00:00:33] Current: 25563, peak: 25563, connected: 1092, disconnected: 0, rate: 1092/s
  35. [00:00:34] Current: 26667, peak: 26667, connected: 1104, disconnected: 0, rate: 1104/s
  36. [00:00:35] Current: 27795, peak: 27795, connected: 1128, disconnected: 0, rate: 1128/s
  37. [00:00:36] Current: 28869, peak: 28869, connected: 1074, disconnected: 0, rate: 1074/s
  38. [00:00:37] Current: 29972, peak: 29972, connected: 1103, disconnected: 0, rate: 1103/s
  39. [00:00:38] Current: 31049, peak: 31049, connected: 1077, disconnected: 0, rate: 1077/s
  40. [00:00:39] Current: 32138, peak: 32138, connected: 1089, disconnected: 0, rate: 1089/s
  41. [00:00:40] Current: 33263, peak: 33263, connected: 1125, disconnected: 0, rate: 1125/s
  42. [00:00:41] Current: 34360, peak: 34360, connected: 1097, disconnected: 0, rate: 1097/s
  43. [00:00:42] Current: 35450, peak: 35450, connected: 1090, disconnected: 0, rate: 1090/s
  44. [00:00:43] Current: 36538, peak: 36538, connected: 1088, disconnected: 0, rate: 1088/s
  45. [00:00:44] Current: 37635, peak: 37635, connected: 1097, disconnected: 0, rate: 1097/s
  46. [00:00:45] Current: 38719, peak: 38719, connected: 1084, disconnected: 0, rate: 1084/s
  47. [00:00:46] Current: 39804, peak: 39804, connected: 1085, disconnected: 0, rate: 1085/s
  48. [00:00:47] Current: 40827, peak: 40827, connected: 1023, disconnected: 0, rate: 1023/s
  49. [00:00:48] Current: 41914, peak: 41914, connected: 1087, disconnected: 0, rate: 1087/s
  50. [00:00:49] Current: 43022, peak: 43022, connected: 1108, disconnected: 0, rate: 1108/s
  51. [00:00:50] Current: 44119, peak: 44119, connected: 1097, disconnected: 0, rate: 1097/s
  52. [00:00:51] Current: 45217, peak: 45217, connected: 1098, disconnected: 0, rate: 1098/s
  53. [00:00:52] Current: 46329, peak: 46329, connected: 1112, disconnected: 0, rate: 1112/s
  54. [00:00:53] Current: 47419, peak: 47419, connected: 1090, disconnected: 0, rate: 1090/s
  55. [00:00:54] Current: 48499, peak: 48499, connected: 1080, disconnected: 0, rate: 1080/s
  56. [00:00:55] Current: 49555, peak: 49555, connected: 1056, disconnected: 0, rate: 1056/s
  57. [00:00:56] Current: 50662, peak: 50662, connected: 1107, disconnected: 0, rate: 1107/s
  58. [00:00:57] Current: 51744, peak: 51744, connected: 1082, disconnected: 0, rate: 1082/s
  59. [00:00:58] Current: 52845, peak: 52845, connected: 1101, disconnected: 0, rate: 1101/s
  60. [00:00:59] Current: 53839, peak: 53839, connected: 994, disconnected: 0, rate: 994/s
  61. [00:01:00] Current: 54716, peak: 54716, connected: 877, disconnected: 0, rate: 877/s
  62. [00:01:01] Current: 55592, peak: 55592, connected: 876, disconnected: 0, rate: 876/s
  63. [00:01:02] Current: 56455, peak: 56455, connected: 863, disconnected: 0, rate: 863/s
  64. [00:01:03] Current: 57296, peak: 57296, connected: 841, disconnected: 0, rate: 841/s
  65. [00:01:04] Current: 58199, peak: 58199, connected: 903, disconnected: 0, rate: 903/s
  66. [00:01:05] Current: 59274, peak: 59274, connected: 1075, disconnected: 0, rate: 1075/s
  67. [00:01:06] Current: 60371, peak: 60371, connected: 1097, disconnected: 0, rate: 1097/s
  68. [00:01:07] Current: 61452, peak: 61452, connected: 1081, disconnected: 0, rate: 1081/s
  69. [00:01:08] Current: 62501, peak: 62501, connected: 1049, disconnected: 0, rate: 1049/s
  70. [00:01:09] Current: 63570, peak: 63570, connected: 1069, disconnected: 0, rate: 1069/s
  71. [00:01:10] Current: 64623, peak: 64623, connected: 1053, disconnected: 0, rate: 1053/s
  72. [00:01:11] Current: 65678, peak: 65678, connected: 1055, disconnected: 0, rate: 1055/s
  73. [00:01:14] Current: 66214, peak: 66214, connected: 536, disconnected: 0, rate: 536/s
  74. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  75.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:57:10 +00:00".
  76. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  77.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:57:10 +00:00".
  78. [00:01:15] Current: 66941, peak: 66941, connected: 727, disconnected: 0, rate: 727/s
  79. [00:01:16] Current: 67939, peak: 67939, connected: 998, disconnected: 0, rate: 998/s
  80. [00:01:17] Current: 68943, peak: 68943, connected: 1004, disconnected: 0, rate: 1004/s
  81. [00:01:18] Current: 69927, peak: 69927, connected: 984, disconnected: 0, rate: 984/s
  82. [00:01:19] Current: 70961, peak: 70961, connected: 1034, disconnected: 0, rate: 1034/s
  83. [00:01:20] Current: 71873, peak: 71873, connected: 912, disconnected: 0, rate: 912/s
  84. [00:01:21] Current: 72851, peak: 72851, connected: 978, disconnected: 0, rate: 978/s
  85. [00:01:22] Current: 73883, peak: 73883, connected: 1032, disconnected: 0, rate: 1032/s
  86. [00:01:23] Current: 74954, peak: 74954, connected: 1071, disconnected: 0, rate: 1071/s
  87. [00:01:24] Current: 75984, peak: 75984, connected: 1030, disconnected: 0, rate: 1030/s
  88. [00:01:25] Current: 77013, peak: 77013, connected: 1029, disconnected: 0, rate: 1029/s
  89. [00:01:26] Current: 78043, peak: 78043, connected: 1030, disconnected: 0, rate: 1030/s
  90. [00:01:27] Current: 79007, peak: 79007, connected: 964, disconnected: 0, rate: 964/s
  91. [00:01:28] Current: 80014, peak: 80014, connected: 1007, disconnected: 0, rate: 1007/s
  92. [00:01:29] Current: 81055, peak: 81055, connected: 1041, disconnected: 0, rate: 1041/s
  93. [00:01:30] Current: 82096, peak: 82096, connected: 1041, disconnected: 0, rate: 1041/s
  94. [00:01:31] Current: 83100, peak: 83100, connected: 1004, disconnected: 0, rate: 1004/s
  95. [00:01:32] Current: 84117, peak: 84117, connected: 1017, disconnected: 0, rate: 1017/s
  96. [00:01:33] Current: 85138, peak: 85138, connected: 1021, disconnected: 0, rate: 1021/s
  97. [00:01:34] Current: 86245, peak: 86245, connected: 1107, disconnected: 0, rate: 1107/s
  98. [00:01:35] Current: 87286, peak: 87286, connected: 1041, disconnected: 0, rate: 1041/s
  99. [00:01:36] Current: 88333, peak: 88333, connected: 1047, disconnected: 0, rate: 1047/s
  100. [00:01:37] Current: 89301, peak: 89301, connected: 968, disconnected: 0, rate: 968/s
  101. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  102.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:57:34 +00:00".
  103. [00:01:38] Current: 90116, peak: 90116, connected: 815, disconnected: 0, rate: 815/s
  104. [00:01:39] Current: 91174, peak: 91174, connected: 1058, disconnected: 0, rate: 1058/s
  105. [00:01:40] Current: 92245, peak: 92245, connected: 1071, disconnected: 0, rate: 1071/s
  106. [00:01:41] Current: 93079, peak: 93079, connected: 834, disconnected: 0, rate: 834/s
  107. [00:01:42] Current: 94185, peak: 94185, connected: 1106, disconnected: 0, rate: 1106/s
  108. [00:01:43] Current: 95270, peak: 95270, connected: 1085, disconnected: 0, rate: 1085/s
  109. [00:01:44] Current: 96358, peak: 96358, connected: 1088, disconnected: 0, rate: 1088/s
  110. [00:01:45] Current: 97420, peak: 97420, connected: 1062, disconnected: 0, rate: 1062/s
  111. [00:01:46] Current: 98357, peak: 98357, connected: 937, disconnected: 0, rate: 937/s
  112. [00:01:47] Current: 99311, peak: 99311, connected: 954, disconnected: 0, rate: 954/s
  113. [00:01:48] Current: 100383, peak: 100383, connected: 1072, disconnected: 0, rate: 1072/s
  114. [00:01:49] Current: 101421, peak: 101421, connected: 1038, disconnected: 0, rate: 1038/s
  115. [00:01:50] Current: 102481, peak: 102481, connected: 1060, disconnected: 0, rate: 1060/s
  116. [00:01:51] Current: 103609, peak: 103609, connected: 1128, disconnected: 0, rate: 1128/s
  117. [00:01:52] Current: 104647, peak: 104647, connected: 1038, disconnected: 0, rate: 1038/s
  118. [00:01:53] Current: 105620, peak: 105620, connected: 973, disconnected: 0, rate: 973/s
  119. [00:01:54] Current: 106663, peak: 106663, connected: 1043, disconnected: 0, rate: 1043/s
  120. [00:01:55] Current: 107724, peak: 107724, connected: 1061, disconnected: 0, rate: 1061/s
  121. [00:01:56] Current: 108715, peak: 108715, connected: 991, disconnected: 0, rate: 991/s
  122. [00:01:57] Current: 109609, peak: 109609, connected: 894, disconnected: 0, rate: 894/s
  123. [00:01:58] Current: 110538, peak: 110538, connected: 929, disconnected: 0, rate: 929/s
  124. [00:01:59] Current: 111526, peak: 111526, connected: 988, disconnected: 0, rate: 988/s
  125. [00:02:02] Current: 112445, peak: 112445, connected: 919, disconnected: 0, rate: 919/s
  126. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  127.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:57:58 +00:00".
  128. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  129.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:57:58 +00:00".
  130. [00:02:03] Current: 112644, peak: 112644, connected: 199, disconnected: 0, rate: 199/s
  131. [00:02:04] Current: 113559, peak: 113559, connected: 915, disconnected: 0, rate: 915/s
  132. [00:02:05] Current: 114557, peak: 114557, connected: 998, disconnected: 0, rate: 998/s
  133. [00:02:06] Current: 115609, peak: 115609, connected: 1052, disconnected: 0, rate: 1052/s
  134. [00:02:07] Current: 116526, peak: 116526, connected: 917, disconnected: 0, rate: 917/s
  135. [00:02:08] Current: 117537, peak: 117537, connected: 1011, disconnected: 0, rate: 1011/s
  136. [00:02:09] Current: 118479, peak: 118479, connected: 942, disconnected: 0, rate: 942/s
  137. [00:02:10] Current: 119401, peak: 119401, connected: 922, disconnected: 0, rate: 922/s
  138. [00:02:11] Current: 120301, peak: 120301, connected: 900, disconnected: 0, rate: 900/s
  139. [00:02:12] Current: 121224, peak: 121224, connected: 923, disconnected: 0, rate: 923/s
  140. [00:02:13] Current: 122078, peak: 122078, connected: 854, disconnected: 0, rate: 854/s
  141. [00:02:14] Current: 123051, peak: 123051, connected: 973, disconnected: 0, rate: 973/s
  142. [00:02:15] Current: 124071, peak: 124071, connected: 1020, disconnected: 0, rate: 1020/s
  143. [00:02:16] Current: 125085, peak: 125085, connected: 1014, disconnected: 0, rate: 1014/s
  144. [00:02:17] Current: 126087, peak: 126087, connected: 1002, disconnected: 0, rate: 1002/s
  145. [00:02:18] Current: 126658, peak: 126658, connected: 571, disconnected: 0, rate: 571/s
  146. [00:02:19] Current: 127565, peak: 127565, connected: 907, disconnected: 0, rate: 907/s
  147. [00:02:20] Current: 128499, peak: 128499, connected: 934, disconnected: 0, rate: 934/s
  148. [00:02:21] Current: 129480, peak: 129480, connected: 981, disconnected: 0, rate: 981/s
  149. [00:02:22] Current: 130269, peak: 130269, connected: 789, disconnected: 0, rate: 789/s
  150. [00:02:23] Current: 130942, peak: 130942, connected: 673, disconnected: 0, rate: 673/s
  151. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  152.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:19 +00:00".
  153. [00:02:24] Current: 131063, peak: 131063, connected: 121, disconnected: 0, rate: 121/s
  154. [00:02:25] Current: 131171, peak: 131171, connected: 108, disconnected: 0, rate: 108/s
  155. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  156.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:22 +00:00".
  157. [00:02:26] Current: 131202, peak: 131202, connected: 31, disconnected: 0, rate: 31/s
  158. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  159.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:23 +00:00".
  160. [00:02:27] Current: 131599, peak: 131599, connected: 397, disconnected: 0, rate: 397/s
  161. [00:02:28] Current: 131747, peak: 131747, connected: 148, disconnected: 0, rate: 148/s
  162. [00:02:29] Current: 132004, peak: 132004, connected: 257, disconnected: 0, rate: 257/s
  163. [00:02:30] Current: 132394, peak: 132394, connected: 390, disconnected: 0, rate: 390/s
  164. [00:02:31] Current: 132617, peak: 132617, connected: 223, disconnected: 0, rate: 223/s
  165. [00:02:32] Current: 132888, peak: 132888, connected: 271, disconnected: 0, rate: 271/s
  166. [00:02:33] Current: 133255, peak: 133255, connected: 367, disconnected: 0, rate: 367/s
  167. [00:02:34] Current: 133583, peak: 133583, connected: 328, disconnected: 0, rate: 328/s
  168. [00:02:35] Current: 133903, peak: 133903, connected: 320, disconnected: 0, rate: 320/s
  169. [00:02:36] Current: 134310, peak: 134310, connected: 407, disconnected: 0, rate: 407/s
  170. [00:02:37] Current: 134657, peak: 134657, connected: 347, disconnected: 0, rate: 347/s
  171. [00:02:38] Current: 134989, peak: 134989, connected: 332, disconnected: 0, rate: 332/s
  172. [00:02:39] Current: 135399, peak: 135399, connected: 410, disconnected: 0, rate: 410/s
  173. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  174.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:36 +00:00".
  175. [00:02:40] Current: 135677, peak: 135677, connected: 278, disconnected: 0, rate: 278/s
  176. [00:02:41] Current: 135857, peak: 135857, connected: 180, disconnected: 0, rate: 180/s
  177. [00:02:42] Current: 136003, peak: 136003, connected: 146, disconnected: 0, rate: 146/s
  178. [00:02:43] Current: 136246, peak: 136246, connected: 243, disconnected: 0, rate: 243/s
  179. [00:02:44] Current: 136465, peak: 136465, connected: 219, disconnected: 0, rate: 219/s
  180. [00:02:45] Current: 136716, peak: 136716, connected: 251, disconnected: 0, rate: 251/s
  181. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  182.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:42 +00:00".
  183. [00:02:46] Current: 137027, peak: 137027, connected: 311, disconnected: 0, rate: 311/s
  184. [00:02:47] Current: 137300, peak: 137300, connected: 273, disconnected: 0, rate: 273/s
  185. [00:02:48] Current: 137472, peak: 137472, connected: 172, disconnected: 0, rate: 172/s
  186. [00:02:49] Current: 137785, peak: 137785, connected: 313, disconnected: 0, rate: 313/s
  187. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  188.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:46 +00:00".
  189. [00:02:50] Current: 138129, peak: 138129, connected: 344, disconnected: 0, rate: 344/s
  190. [00:02:51] Current: 138333, peak: 138333, connected: 204, disconnected: 0, rate: 204/s
  191. [00:02:52] Current: 138636, peak: 138636, connected: 303, disconnected: 0, rate: 303/s
  192. [00:02:53] Current: 138867, peak: 138867, connected: 231, disconnected: 0, rate: 231/s
  193. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  194.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:50 +00:00".
  195. [00:02:54] Current: 139149, peak: 139149, connected: 282, disconnected: 0, rate: 282/s
  196. [00:02:55] Current: 139433, peak: 139433, connected: 284, disconnected: 0, rate: 284/s
  197. [00:02:57] Current: 139501, peak: 139501, connected: 68, disconnected: 0, rate: 68/s
  198. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  199.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:53 +00:00".
  200. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  201.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:53 +00:00".
  202. [00:02:58] Current: 139506, peak: 139506, connected: 5, disconnected: 0, rate: 5/s
  203. [00:02:59] Current: 139561, peak: 139561, connected: 55, disconnected: 0, rate: 55/s
  204. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  205.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:56 +00:00".
  206. [00:03:00] Current: 139860, peak: 139860, connected: 299, disconnected: 0, rate: 299/s
  207. [00:03:01] Current: 140154, peak: 140154, connected: 294, disconnected: 0, rate: 294/s
  208. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  209.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:58 +00:00".
  210. [00:03:02] Current: 140394, peak: 140394, connected: 240, disconnected: 0, rate: 240/s
  211. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  212.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:58:59 +00:00".
  213. [00:03:03] Current: 140672, peak: 140672, connected: 278, disconnected: 0, rate: 278/s
  214. [00:03:04] Current: 140915, peak: 140915, connected: 243, disconnected: 0, rate: 243/s
  215. [00:03:05] Current: 141165, peak: 141165, connected: 250, disconnected: 0, rate: 250/s
  216. [00:03:06] Current: 141470, peak: 141470, connected: 305, disconnected: 0, rate: 305/s
  217. [00:03:07] Current: 141705, peak: 141705, connected: 235, disconnected: 0, rate: 235/s
  218. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  219.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:04 +00:00".
  220. [00:03:08] Current: 141967, peak: 141967, connected: 262, disconnected: 0, rate: 262/s
  221. [00:03:11] Current: 141980, peak: 141980, connected: 13, disconnected: 0, rate: 13/s
  222. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  223.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:07 +00:00".
  224. [00:03:12] Current: 142018, peak: 142018, connected: 38, disconnected: 0, rate: 38/s
  225. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  226.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:10 +00:00".
  227. [00:03:13] Current: 142087, peak: 142087, connected: 69, disconnected: 0, rate: 69/s
  228. [00:03:14] Current: 142212, peak: 142212, connected: 125, disconnected: 0, rate: 125/s
  229. [00:03:15] Current: 142406, peak: 142406, connected: 194, disconnected: 0, rate: 194/s
  230. [00:03:16] Current: 142748, peak: 142748, connected: 342, disconnected: 0, rate: 342/s
  231. [00:03:17] Current: 143074, peak: 143074, connected: 326, disconnected: 0, rate: 326/s
  232. [00:03:18] Current: 143427, peak: 143427, connected: 353, disconnected: 0, rate: 353/s
  233. [00:03:19] Current: 143723, peak: 143723, connected: 296, disconnected: 0, rate: 296/s
  234. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  235.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:16 +00:00".
  236. [00:03:20] Current: 144017, peak: 144017, connected: 294, disconnected: 0, rate: 294/s
  237. [00:03:21] Current: 144302, peak: 144302, connected: 285, disconnected: 0, rate: 285/s
  238. [00:03:22] Current: 144661, peak: 144661, connected: 359, disconnected: 0, rate: 359/s
  239. [00:03:26] Current: 144872, peak: 144872, connected: 211, disconnected: 0, rate: 211/s
  240. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  241.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:22 +00:00".
  242. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  243.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:23 +00:00".
  244. [00:03:27] Current: 144937, peak: 144937, connected: 65, disconnected: 0, rate: 65/s
  245. [00:03:28] Current: 145291, peak: 145291, connected: 354, disconnected: 0, rate: 354/s
  246. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  247.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:24 +00:00".
  248. [00:03:29] Current: 145633, peak: 145633, connected: 342, disconnected: 0, rate: 342/s
  249. [00:03:30] Current: 145928, peak: 145928, connected: 295, disconnected: 0, rate: 295/s
  250. [00:03:31] Current: 146325, peak: 146325, connected: 397, disconnected: 0, rate: 397/s
  251. [00:03:32] Current: 146715, peak: 146715, connected: 390, disconnected: 0, rate: 390/s
  252. [00:03:33] Current: 147170, peak: 147170, connected: 455, disconnected: 0, rate: 455/s
  253. [00:03:34] Current: 147585, peak: 147585, connected: 415, disconnected: 0, rate: 415/s
  254. [00:03:35] Current: 148020, peak: 148020, connected: 435, disconnected: 0, rate: 435/s
  255. [00:03:36] Current: 148378, peak: 148378, connected: 358, disconnected: 0, rate: 358/s
  256. [00:03:37] Current: 148811, peak: 148811, connected: 433, disconnected: 0, rate: 433/s
  257. [00:03:38] Current: 149298, peak: 149298, connected: 487, disconnected: 0, rate: 487/s
  258. [00:03:39] Current: 149735, peak: 149735, connected: 437, disconnected: 0, rate: 437/s
  259. [00:03:40] Current: 150168, peak: 150168, connected: 433, disconnected: 0, rate: 433/s
  260. [00:03:41] Current: 150673, peak: 150673, connected: 505, disconnected: 0, rate: 505/s
  261. [00:03:42] Current: 151051, peak: 151051, connected: 378, disconnected: 0, rate: 378/s
  262. [00:03:43] Current: 151500, peak: 151500, connected: 449, disconnected: 0, rate: 449/s
  263. [00:03:44] Current: 152022, peak: 152022, connected: 522, disconnected: 0, rate: 522/s
  264. [00:03:45] Current: 152404, peak: 152404, connected: 382, disconnected: 0, rate: 382/s
  265. [00:03:46] Current: 152530, peak: 152530, connected: 126, disconnected: 0, rate: 126/s
  266. [00:03:47] Current: 153010, peak: 153010, connected: 480, disconnected: 0, rate: 480/s
  267. [00:03:48] Current: 153649, peak: 153649, connected: 639, disconnected: 0, rate: 639/s
  268. [00:03:49] Current: 154283, peak: 154283, connected: 634, disconnected: 0, rate: 634/s
  269. [00:03:51] Current: 154607, peak: 154607, connected: 324, disconnected: 0, rate: 324/s
  270. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  271.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:48 +00:00".
  272. [00:03:52] Current: 154626, peak: 154626, connected: 19, disconnected: 0, rate: 19/s
  273. [00:03:53] Current: 154726, peak: 154726, connected: 100, disconnected: 0, rate: 100/s
  274. [00:03:54] Current: 154770, peak: 154770, connected: 44, disconnected: 0, rate: 44/s
  275. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  276.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:52 +00:00".
  277. [00:03:55] Current: 154959, peak: 154959, connected: 189, disconnected: 0, rate: 189/s
  278. [00:03:56] Current: 155430, peak: 155430, connected: 471, disconnected: 0, rate: 471/s
  279. [00:03:57] Current: 155944, peak: 155944, connected: 514, disconnected: 0, rate: 514/s
  280. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  281.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:55 +00:00".
  282. [00:03:58] Current: 156458, peak: 156458, connected: 514, disconnected: 0, rate: 514/s
  283. [00:03:59] Current: 157046, peak: 157046, connected: 588, disconnected: 0, rate: 588/s
  284. [00:04:00] Current: 157145, peak: 157145, connected: 99, disconnected: 0, rate: 99/s
  285. [00:04:01] Current: 157168, peak: 157168, connected: 23, disconnected: 0, rate: 23/s
  286. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  287.       Heartbeat took longer than "00:00:01" at "06/10/2019 02:59:59 +00:00".
  288. [00:04:02] Current: 157390, peak: 157390, connected: 222, disconnected: 0, rate: 222/s
  289. [00:04:03] Current: 158054, peak: 158054, connected: 664, disconnected: 0, rate: 664/s
  290. [00:04:04] Current: 158565, peak: 158565, connected: 511, disconnected: 0, rate: 511/s
  291. [00:04:05] Current: 159025, peak: 159025, connected: 460, disconnected: 0, rate: 460/s
  292. [00:04:06] Current: 159507, peak: 159507, connected: 482, disconnected: 0, rate: 482/s
  293. [00:04:07] Current: 159840, peak: 159840, connected: 333, disconnected: 0, rate: 333/s
  294. [00:04:08] Current: 160175, peak: 160175, connected: 335, disconnected: 0, rate: 335/s
  295. [00:04:09] Current: 160691, peak: 160691, connected: 516, disconnected: 0, rate: 516/s
  296. [00:04:10] Current: 161229, peak: 161229, connected: 538, disconnected: 0, rate: 538/s
  297. [00:04:11] Current: 161767, peak: 161767, connected: 538, disconnected: 0, rate: 538/s
  298. [00:04:12] Current: 162117, peak: 162117, connected: 350, disconnected: 0, rate: 350/s
  299. [00:04:13] Current: 162380, peak: 162380, connected: 263, disconnected: 0, rate: 263/s
  300. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  301.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:00:11 +00:00".
  302. [00:04:14] Current: 162689, peak: 162689, connected: 309, disconnected: 0, rate: 309/s
  303. [00:04:17] Current: 162780, peak: 162780, connected: 91, disconnected: 0, rate: 91/s
  304. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  305.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:00:13 +00:00".
  306. [00:04:18] Current: 162796, peak: 162796, connected: 16, disconnected: 0, rate: 16/s
  307. [00:04:19] Current: 162824, peak: 162824, connected: 28, disconnected: 0, rate: 28/s
  308. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  309.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:00:15 +00:00".
  310. [00:04:20] Current: 162897, peak: 162897, connected: 73, disconnected: 0, rate: 73/s
  311. [00:04:21] Current: 162951, peak: 162951, connected: 54, disconnected: 0, rate: 54/s
  312. [00:04:22] Current: 163055, peak: 163055, connected: 104, disconnected: 0, rate: 104/s
  313. [00:04:23] Current: 163229, peak: 163229, connected: 174, disconnected: 0, rate: 174/s
  314. [00:04:24] Current: 163238, peak: 163238, connected: 9, disconnected: 0, rate: 9/s
  315. [00:04:25] Current: 163338, peak: 163338, connected: 100, disconnected: 0, rate: 100/s
  316. [00:04:26] Current: 163647, peak: 163647, connected: 309, disconnected: 0, rate: 309/s
  317. [00:04:27] Current: 163931, peak: 163931, connected: 284, disconnected: 0, rate: 284/s
  318. [00:04:28] Current: 164309, peak: 164309, connected: 378, disconnected: 0, rate: 378/s
  319. [00:04:29] Current: 164554, peak: 164554, connected: 245, disconnected: 0, rate: 245/s
  320. [00:04:30] Current: 164869, peak: 164869, connected: 315, disconnected: 0, rate: 315/s
  321. [00:04:31] Current: 165145, peak: 165145, connected: 276, disconnected: 0, rate: 276/s
  322. [00:04:32] Current: 165413, peak: 165413, connected: 268, disconnected: 0, rate: 268/s
  323. [00:04:33] Current: 165514, peak: 165514, connected: 101, disconnected: 0, rate: 101/s
  324. [00:04:34] Current: 165666, peak: 165666, connected: 152, disconnected: 0, rate: 152/s
  325. [00:04:35] Current: 165933, peak: 165933, connected: 267, disconnected: 0, rate: 267/s
  326. [00:04:36] Current: 166234, peak: 166234, connected: 301, disconnected: 0, rate: 301/s
  327. [00:04:37] Current: 166493, peak: 166493, connected: 259, disconnected: 0, rate: 259/s
  328. [00:04:38] Current: 166767, peak: 166767, connected: 274, disconnected: 0, rate: 274/s
  329. [00:04:39] Current: 166922, peak: 166922, connected: 155, disconnected: 0, rate: 155/s
  330. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  331.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:00:36 +00:00".
  332. [00:04:40] Current: 167204, peak: 167204, connected: 282, disconnected: 0, rate: 282/s
  333. [00:04:41] Current: 167493, peak: 167493, connected: 289, disconnected: 0, rate: 289/s
  334. [00:04:42] Current: 167773, peak: 167773, connected: 280, disconnected: 0, rate: 280/s
  335. [00:04:43] Current: 168061, peak: 168061, connected: 288, disconnected: 0, rate: 288/s
  336. [00:04:44] Current: 168334, peak: 168334, connected: 273, disconnected: 0, rate: 273/s
  337. [00:04:46] Current: 168569, peak: 168569, connected: 235, disconnected: 0, rate: 235/s
  338. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  339.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:00:42 +00:00".
  340. [00:04:47] Current: 168664, peak: 168664, connected: 95, disconnected: 0, rate: 95/s
  341. [00:04:48] Current: 168699, peak: 168699, connected: 35, disconnected: 0, rate: 35/s
  342. [00:04:49] Current: 168716, peak: 168716, connected: 17, disconnected: 0, rate: 17/s
  343. [00:04:50] Current: 168797, peak: 168797, connected: 81, disconnected: 0, rate: 81/s
  344. [00:04:51] Current: 169069, peak: 169069, connected: 272, disconnected: 0, rate: 272/s
  345. [00:04:52] Current: 169373, peak: 169373, connected: 304, disconnected: 0, rate: 304/s
  346. [00:04:53] Current: 169620, peak: 169620, connected: 247, disconnected: 0, rate: 247/s
  347. [00:04:54] Current: 169852, peak: 169852, connected: 232, disconnected: 0, rate: 232/s
  348. [00:04:55] Current: 169975, peak: 169975, connected: 123, disconnected: 0, rate: 123/s
  349. [00:04:56] Current: 170278, peak: 170278, connected: 303, disconnected: 0, rate: 303/s
  350. [00:04:57] Current: 170569, peak: 170569, connected: 291, disconnected: 0, rate: 291/s
  351. [00:04:58] Current: 170890, peak: 170890, connected: 321, disconnected: 0, rate: 321/s
  352. [00:04:59] Current: 171199, peak: 171199, connected: 309, disconnected: 0, rate: 309/s
  353. [00:05:00] Current: 171516, peak: 171516, connected: 317, disconnected: 0, rate: 317/s
  354. [00:05:01] Current: 171859, peak: 171859, connected: 343, disconnected: 0, rate: 343/s
  355. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  356.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:00:58 +00:00".
  357. [00:05:02] Current: 172194, peak: 172194, connected: 335, disconnected: 0, rate: 335/s
  358. [00:05:03] Current: 172533, peak: 172533, connected: 339, disconnected: 0, rate: 339/s
  359. [00:05:04] Current: 172635, peak: 172635, connected: 102, disconnected: 0, rate: 102/s
  360. [00:05:05] Current: 172684, peak: 172684, connected: 49, disconnected: 0, rate: 49/s
  361. [00:05:06] Current: 172932, peak: 172932, connected: 248, disconnected: 0, rate: 248/s
  362. [00:05:07] Current: 173275, peak: 173275, connected: 343, disconnected: 0, rate: 343/s
  363. [00:05:08] Current: 173592, peak: 173592, connected: 317, disconnected: 0, rate: 317/s
  364. [00:05:09] Current: 173927, peak: 173927, connected: 335, disconnected: 0, rate: 335/s
  365. [00:05:10] Current: 174013, peak: 174013, connected: 86, disconnected: 0, rate: 86/s
  366. [00:05:11] Current: 174305, peak: 174305, connected: 292, disconnected: 0, rate: 292/s
  367. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  368.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:08 +00:00".
  369. [00:05:12] Current: 174608, peak: 174608, connected: 303, disconnected: 0, rate: 303/s
  370. [00:05:13] Current: 174972, peak: 174972, connected: 364, disconnected: 0, rate: 364/s
  371. [00:05:15] Current: 175239, peak: 175239, connected: 267, disconnected: 0, rate: 267/s
  372. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  373.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:12 +00:00".
  374. [00:05:16] Current: 175278, peak: 175278, connected: 39, disconnected: 0, rate: 39/s
  375. [00:05:17] Current: 175373, peak: 175373, connected: 95, disconnected: 0, rate: 95/s
  376. [00:05:18] Current: 175526, peak: 175526, connected: 153, disconnected: 0, rate: 153/s
  377. [00:05:19] Current: 175644, peak: 175644, connected: 118, disconnected: 0, rate: 118/s
  378. [00:05:20] Current: 175678, peak: 175678, connected: 34, disconnected: 0, rate: 34/s
  379. [00:05:21] Current: 175846, peak: 175846, connected: 168, disconnected: 0, rate: 168/s
  380. [00:05:22] Current: 176164, peak: 176164, connected: 318, disconnected: 0, rate: 318/s
  381. [00:05:23] Current: 176483, peak: 176483, connected: 319, disconnected: 0, rate: 319/s
  382. [00:05:24] Current: 176657, peak: 176657, connected: 174, disconnected: 0, rate: 174/s
  383. [00:05:25] Current: 176883, peak: 176883, connected: 226, disconnected: 0, rate: 226/s
  384. [00:05:26] Current: 177008, peak: 177008, connected: 125, disconnected: 0, rate: 125/s
  385. [00:05:27] Current: 177332, peak: 177332, connected: 324, disconnected: 0, rate: 324/s
  386. [00:05:28] Current: 177632, peak: 177632, connected: 300, disconnected: 0, rate: 300/s
  387. [00:05:29] Current: 177996, peak: 177996, connected: 364, disconnected: 0, rate: 364/s
  388. [00:05:30] Current: 178367, peak: 178367, connected: 371, disconnected: 0, rate: 371/s
  389. [00:05:31] Current: 178706, peak: 178706, connected: 339, disconnected: 0, rate: 339/s
  390. [00:05:32] Current: 178912, peak: 178912, connected: 206, disconnected: 0, rate: 206/s
  391. [00:05:33] Current: 179222, peak: 179222, connected: 310, disconnected: 0, rate: 310/s
  392. [00:05:34] Current: 179434, peak: 179434, connected: 212, disconnected: 0, rate: 212/s
  393. [00:05:35] Current: 179523, peak: 179523, connected: 89, disconnected: 0, rate: 89/s
  394. [00:05:36] Current: 179674, peak: 179674, connected: 151, disconnected: 0, rate: 151/s
  395. [00:05:37] Current: 180066, peak: 180066, connected: 392, disconnected: 0, rate: 392/s
  396. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  397.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:35 +00:00".
  398. [00:05:38] Current: 180474, peak: 180474, connected: 408, disconnected: 0, rate: 408/s
  399. [00:05:40] Current: 180679, peak: 180679, connected: 205, disconnected: 0, rate: 205/s
  400. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  401.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:37 +00:00".
  402. [00:05:41] Current: 180701, peak: 180701, connected: 22, disconnected: 0, rate: 22/s
  403. [00:05:42] Current: 180797, peak: 180797, connected: 96, disconnected: 0, rate: 96/s
  404. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  405.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:39 +00:00".
  406. [00:05:43] Current: 180830, peak: 180830, connected: 33, disconnected: 0, rate: 33/s
  407. [00:05:44] Current: 180861, peak: 180861, connected: 31, disconnected: 0, rate: 31/s
  408. [00:05:45] Current: 180877, peak: 180877, connected: 16, disconnected: 0, rate: 16/s
  409. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  410.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:43 +00:00".
  411. [00:05:46] Current: 181068, peak: 181068, connected: 191, disconnected: 0, rate: 191/s
  412. [00:05:47] Current: 181404, peak: 181404, connected: 336, disconnected: 0, rate: 336/s
  413. [00:05:48] Current: 181768, peak: 181768, connected: 364, disconnected: 0, rate: 364/s
  414. [00:05:49] Current: 181887, peak: 181887, connected: 119, disconnected: 0, rate: 119/s
  415. [00:05:50] Current: 181968, peak: 181968, connected: 81, disconnected: 0, rate: 81/s
  416. [00:05:51] Current: 182097, peak: 182097, connected: 129, disconnected: 0, rate: 129/s
  417. [00:05:52] Current: 182457, peak: 182457, connected: 360, disconnected: 0, rate: 360/s
  418. [00:05:53] Current: 182829, peak: 182829, connected: 372, disconnected: 0, rate: 372/s
  419. [00:05:54] Current: 183198, peak: 183198, connected: 369, disconnected: 0, rate: 369/s
  420. [00:05:55] Current: 183510, peak: 183510, connected: 312, disconnected: 0, rate: 312/s
  421. [00:05:56] Current: 183666, peak: 183666, connected: 156, disconnected: 0, rate: 156/s
  422. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  423.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:54 +00:00".
  424. [00:05:57] Current: 183704, peak: 183704, connected: 38, disconnected: 0, rate: 38/s
  425. [00:05:58] Current: 183971, peak: 183971, connected: 267, disconnected: 0, rate: 267/s
  426. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  427.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:01:56 +00:00".
  428. [00:05:59] Current: 184233, peak: 184233, connected: 262, disconnected: 0, rate: 262/s
  429. [00:06:00] Current: 184588, peak: 184588, connected: 355, disconnected: 0, rate: 355/s
  430. [00:06:01] Current: 184941, peak: 184941, connected: 353, disconnected: 0, rate: 353/s
  431. [00:06:02] Current: 185258, peak: 185258, connected: 317, disconnected: 0, rate: 317/s
  432. [00:06:03] Current: 185579, peak: 185579, connected: 321, disconnected: 0, rate: 321/s
  433. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  434.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:01 +00:00".
  435. [00:06:04] Current: 185863, peak: 185863, connected: 284, disconnected: 0, rate: 284/s
  436. [00:06:06] Current: 185868, peak: 185868, connected: 5, disconnected: 0, rate: 5/s
  437. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  438.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:03 +00:00".
  439. [00:06:07] Current: 185950, peak: 185950, connected: 82, disconnected: 0, rate: 82/s
  440. [00:06:08] Current: 185987, peak: 185987, connected: 37, disconnected: 0, rate: 37/s
  441. [00:06:09] Current: 186043, peak: 186043, connected: 56, disconnected: 0, rate: 56/s
  442. [00:06:10] Current: 186071, peak: 186071, connected: 28, disconnected: 0, rate: 28/s
  443. [00:06:11] Current: 186192, peak: 186192, connected: 121, disconnected: 0, rate: 121/s
  444. [00:06:12] Current: 186405, peak: 186405, connected: 213, disconnected: 0, rate: 213/s
  445. [00:06:13] Current: 186580, peak: 186580, connected: 175, disconnected: 0, rate: 175/s
  446. [00:06:14] Current: 186996, peak: 186996, connected: 416, disconnected: 0, rate: 416/s
  447. [00:06:15] Current: 187201, peak: 187201, connected: 205, disconnected: 0, rate: 205/s
  448. [00:06:16] Current: 187546, peak: 187546, connected: 345, disconnected: 0, rate: 345/s
  449. [00:06:17] Current: 187931, peak: 187931, connected: 385, disconnected: 0, rate: 385/s
  450. [00:06:22] Current: 188159, peak: 188159, connected: 228, disconnected: 0, rate: 228/s
  451. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  452.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:19 +00:00".
  453. [00:06:23] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  454. [00:06:25] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  455. [00:06:28] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  456. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  457.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:25 +00:00".
  458. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  459.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:25 +00:00".
  460. [00:06:29] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  461. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  462.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:27 +00:00".
  463. [00:06:30] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  464. [00:06:31] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  465. [00:06:32] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  466. [00:06:33] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  467. [00:06:34] Current: 188159, peak: 188159, connected: 0, disconnected: 0, rate: 0/s
  468. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  469.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:31 +00:00".
  470. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  471.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:32 +00:00".
  472. [00:06:35] Current: 188192, peak: 188192, connected: 33, disconnected: 0, rate: 33/s
  473. [00:06:36] Current: 188193, peak: 188193, connected: 1, disconnected: 0, rate: 1/s
  474. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  475.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:33 +00:00".
  476. [00:06:37] Current: 188323, peak: 188323, connected: 130, disconnected: 0, rate: 130/s
  477. [00:06:38] Current: 188325, peak: 188326, connected: 4, disconnected: 2, rate: 2/s
  478. [00:06:39] Current: 188327, peak: 188327, connected: 2, disconnected: 0, rate: 2/s
  479. [00:06:40] Current: 188327, peak: 188327, connected: 0, disconnected: 0, rate: 0/s
  480. [00:06:41] Current: 188338, peak: 188338, connected: 11, disconnected: 0, rate: 11/s
  481. [00:06:42] Current: 188336, peak: 188342, connected: 7, disconnected: 9, rate: -2/s
  482. [00:06:43] Current: 188435, peak: 188435, connected: 122, disconnected: 23, rate: 99/s
  483. [00:06:45] Current: 188435, peak: 188436, connected: 5, disconnected: 5, rate: 0/s
  484. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  485.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:41 +00:00".
  486. [00:06:46] Current: 188473, peak: 188474, connected: 42, disconnected: 4, rate: 38/s
  487. [00:06:47] Current: 188480, peak: 188481, connected: 10, disconnected: 3, rate: 7/s
  488. [00:06:48] Current: 188489, peak: 188489, connected: 15, disconnected: 6, rate: 9/s
  489. [00:06:49] Current: 188502, peak: 188503, connected: 14, disconnected: 1, rate: 13/s
  490. [00:06:50] Current: 188518, peak: 188518, connected: 18, disconnected: 2, rate: 16/s
  491. [00:06:51] Current: 188639, peak: 188639, connected: 121, disconnected: 0, rate: 121/s
  492. [00:06:52] Current: 189010, peak: 189010, connected: 371, disconnected: 0, rate: 371/s
  493. [00:06:53] Current: 189376, peak: 189376, connected: 369, disconnected: 3, rate: 366/s
  494. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  495.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:50 +00:00".
  496. [00:06:54] Current: 189595, peak: 189595, connected: 219, disconnected: 0, rate: 219/s
  497. [00:06:55] Current: 189623, peak: 189623, connected: 28, disconnected: 0, rate: 28/s
  498. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  499.       Failed writing message. Aborting connection.
  500. System.InvalidOperationException: Writing is not allowed after writer was completed.
  501.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  502.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  503.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  504.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  505. [00:06:56] Current: 189651, peak: 189651, connected: 28, disconnected: 0, rate: 28/s
  506. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  507.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:02:53 +00:00".
  508. [00:06:57] Current: 189779, peak: 189779, connected: 130, disconnected: 2, rate: 128/s
  509. [00:06:58] Current: 189900, peak: 189900, connected: 121, disconnected: 0, rate: 121/s
  510. [00:06:59] Current: 190301, peak: 190301, connected: 401, disconnected: 0, rate: 401/s
  511. [00:07:00] Current: 190706, peak: 190706, connected: 405, disconnected: 0, rate: 405/s
  512. [00:07:01] Current: 191002, peak: 191002, connected: 296, disconnected: 0, rate: 296/s
  513. [00:07:02] Current: 191046, peak: 191046, connected: 44, disconnected: 0, rate: 44/s
  514. [00:07:03] Current: 191080, peak: 191080, connected: 34, disconnected: 0, rate: 34/s
  515. [00:07:04] Current: 191109, peak: 191109, connected: 29, disconnected: 0, rate: 29/s
  516. [00:07:06] Current: 191121, peak: 191121, connected: 12, disconnected: 0, rate: 12/s
  517. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  518.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:02 +00:00".
  519. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  520.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:02 +00:00".
  521. [00:07:07] Current: 191126, peak: 191126, connected: 5, disconnected: 0, rate: 5/s
  522. [00:07:08] Current: 191157, peak: 191157, connected: 31, disconnected: 0, rate: 31/s
  523. [00:07:09] Current: 191248, peak: 191248, connected: 91, disconnected: 0, rate: 91/s
  524. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  525.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:05 +00:00".
  526. [00:07:10] Current: 191333, peak: 191333, connected: 85, disconnected: 0, rate: 85/s
  527. [00:07:11] Current: 191363, peak: 191363, connected: 30, disconnected: 0, rate: 30/s
  528. [00:07:12] Current: 191397, peak: 191397, connected: 34, disconnected: 0, rate: 34/s
  529. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  530.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:09 +00:00".
  531. [00:07:13] Current: 191591, peak: 191591, connected: 194, disconnected: 0, rate: 194/s
  532. [00:07:14] Current: 191980, peak: 191980, connected: 390, disconnected: 1, rate: 389/s
  533. [00:07:15] Current: 192382, peak: 192382, connected: 403, disconnected: 1, rate: 402/s
  534. [00:07:16] Current: 192785, peak: 192785, connected: 403, disconnected: 0, rate: 403/s
  535. [00:07:17] Current: 192858, peak: 192858, connected: 73, disconnected: 0, rate: 73/s
  536. [00:07:18] Current: 192955, peak: 192955, connected: 97, disconnected: 0, rate: 97/s
  537. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  538.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:15 +00:00".
  539. [00:07:19] Current: 192992, peak: 192992, connected: 37, disconnected: 0, rate: 37/s
  540. [00:07:20] Current: 192996, peak: 192996, connected: 4, disconnected: 0, rate: 4/s
  541. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  542.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:17 +00:00".
  543. [00:07:21] Current: 193096, peak: 193096, connected: 100, disconnected: 0, rate: 100/s
  544. [00:07:22] Current: 193413, peak: 193413, connected: 317, disconnected: 0, rate: 317/s
  545. [00:07:23] Current: 193708, peak: 193708, connected: 295, disconnected: 0, rate: 295/s
  546. [00:07:24] Current: 194082, peak: 194082, connected: 374, disconnected: 0, rate: 374/s
  547. [00:07:25] Current: 194252, peak: 194252, connected: 170, disconnected: 0, rate: 170/s
  548. [00:07:26] Current: 194254, peak: 194254, connected: 2, disconnected: 0, rate: 2/s
  549. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  550.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:23 +00:00".
  551. [00:07:27] Current: 194276, peak: 194276, connected: 22, disconnected: 0, rate: 22/s
  552. [00:07:28] Current: 194300, peak: 194300, connected: 24, disconnected: 0, rate: 24/s
  553. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  554.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:25 +00:00".
  555. [00:07:29] Current: 194361, peak: 194361, connected: 61, disconnected: 0, rate: 61/s
  556. [00:07:30] Current: 194412, peak: 194412, connected: 51, disconnected: 0, rate: 51/s
  557. [00:07:31] Current: 194631, peak: 194631, connected: 219, disconnected: 0, rate: 219/s
  558. [00:07:32] Current: 194719, peak: 194719, connected: 88, disconnected: 0, rate: 88/s
  559. [00:07:33] Current: 194743, peak: 194743, connected: 24, disconnected: 0, rate: 24/s
  560. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  561.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:31 +00:00".
  562. [00:07:34] Current: 194770, peak: 194770, connected: 27, disconnected: 0, rate: 27/s
  563. [00:07:35] Current: 194852, peak: 194852, connected: 82, disconnected: 0, rate: 82/s
  564. [00:07:36] Current: 195022, peak: 195022, connected: 170, disconnected: 0, rate: 170/s
  565. [00:07:37] Current: 195439, peak: 195439, connected: 417, disconnected: 0, rate: 417/s
  566. [00:07:38] Current: 195712, peak: 195712, connected: 273, disconnected: 0, rate: 273/s
  567. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  568.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:35 +00:00".
  569. [00:07:39] Current: 196122, peak: 196122, connected: 410, disconnected: 0, rate: 410/s
  570. [00:07:40] Current: 196252, peak: 196252, connected: 130, disconnected: 0, rate: 130/s
  571. [00:07:42] Current: 196506, peak: 196506, connected: 254, disconnected: 0, rate: 254/s
  572. [00:07:43] Current: 196637, peak: 196637, connected: 131, disconnected: 0, rate: 131/s
  573. [00:07:44] Current: 196690, peak: 196690, connected: 53, disconnected: 0, rate: 53/s
  574. [00:07:45] Current: 197037, peak: 197037, connected: 347, disconnected: 0, rate: 347/s
  575. [00:07:46] Current: 197438, peak: 197438, connected: 401, disconnected: 0, rate: 401/s
  576. [00:07:47] Current: 197840, peak: 197840, connected: 402, disconnected: 0, rate: 402/s
  577. [00:07:49] Current: 198073, peak: 198073, connected: 233, disconnected: 0, rate: 233/s
  578. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  579.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:45 +00:00".
  580. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  581.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:03:45 +00:00".
  582. [00:07:50] Current: 198119, peak: 198119, connected: 46, disconnected: 0, rate: 46/s
  583. [00:07:51] Current: 198163, peak: 198163, connected: 44, disconnected: 0, rate: 44/s
  584. [00:07:52] Current: 198222, peak: 198222, connected: 59, disconnected: 0, rate: 59/s
  585. [00:07:53] Current: 198246, peak: 198246, connected: 24, disconnected: 0, rate: 24/s
  586. [00:07:54] Current: 198249, peak: 198249, connected: 3, disconnected: 0, rate: 3/s
  587. [00:07:55] Current: 198257, peak: 198257, connected: 8, disconnected: 0, rate: 8/s
  588. [00:07:56] Current: 198258, peak: 198258, connected: 1, disconnected: 0, rate: 1/s
  589. [00:07:57] Current: 198259, peak: 198259, connected: 1, disconnected: 0, rate: 1/s
  590. [00:07:58] Current: 198265, peak: 198265, connected: 6, disconnected: 0, rate: 6/s
  591. [00:07:59] Current: 198267, peak: 198267, connected: 2, disconnected: 0, rate: 2/s
  592. [00:08:00] Current: 198274, peak: 198274, connected: 7, disconnected: 0, rate: 7/s
  593. [00:08:01] Current: 198287, peak: 198287, connected: 13, disconnected: 0, rate: 13/s
  594. [00:08:02] Current: 198381, peak: 198381, connected: 94, disconnected: 0, rate: 94/s
  595. [00:08:03] Current: 198559, peak: 198559, connected: 178, disconnected: 0, rate: 178/s
  596. [00:08:04] Current: 198853, peak: 198853, connected: 295, disconnected: 1, rate: 294/s
  597. [00:08:05] Current: 198968, peak: 198968, connected: 115, disconnected: 0, rate: 115/s
  598. [00:08:06] Current: 199026, peak: 199026, connected: 60, disconnected: 2, rate: 58/s
  599. [00:08:07] Current: 199047, peak: 199047, connected: 21, disconnected: 0, rate: 21/s
  600. [00:08:09] Current: 199054, peak: 199054, connected: 7, disconnected: 0, rate: 7/s
  601. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  602.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:05 +00:00".
  603. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  604.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:05 +00:00".
  605. [00:08:10] Current: 199106, peak: 199106, connected: 53, disconnected: 1, rate: 52/s
  606. [00:08:11] Current: 199328, peak: 199328, connected: 228, disconnected: 6, rate: 222/s
  607. [00:08:12] Current: 199340, peak: 199342, connected: 21, disconnected: 9, rate: 12/s
  608. [00:08:13] Current: 199461, peak: 199461, connected: 126, disconnected: 5, rate: 121/s
  609. [00:08:14] Current: 199540, peak: 199540, connected: 94, disconnected: 15, rate: 79/s
  610. [00:08:15] Current: 199626, peak: 199626, connected: 93, disconnected: 7, rate: 86/s
  611. [00:08:16] Current: 199930, peak: 199930, connected: 313, disconnected: 9, rate: 304/s
  612. [00:08:17] Current: 200335, peak: 200335, connected: 416, disconnected: 11, rate: 405/s
  613. [00:08:18] Current: 200729, peak: 200729, connected: 399, disconnected: 5, rate: 394/s
  614. [00:08:19] Current: 201033, peak: 201033, connected: 305, disconnected: 1, rate: 304/s
  615. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  616.       Failed writing message. Aborting connection.
  617. System.InvalidOperationException: Writing is not allowed after writer was completed.
  618.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  619.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  620.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  621.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  622. [00:08:20] Current: 201289, peak: 201289, connected: 260, disconnected: 4, rate: 256/s
  623. [00:08:21] Current: 201318, peak: 201319, connected: 33, disconnected: 4, rate: 29/s
  624. [00:08:22] Current: 201325, peak: 201325, connected: 10, disconnected: 3, rate: 7/s
  625. [00:08:23] Current: 201350, peak: 201350, connected: 25, disconnected: 0, rate: 25/s
  626. [00:08:24] Current: 201432, peak: 201432, connected: 82, disconnected: 0, rate: 82/s
  627. [00:08:25] Current: 201774, peak: 201774, connected: 347, disconnected: 5, rate: 342/s
  628. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  629.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:21 +00:00".
  630. [00:08:26] Current: 202148, peak: 202148, connected: 375, disconnected: 1, rate: 374/s
  631. [00:08:27] Current: 202303, peak: 202303, connected: 155, disconnected: 0, rate: 155/s
  632. [00:08:29] Current: 202371, peak: 202371, connected: 69, disconnected: 1, rate: 68/s
  633. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  634.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:26 +00:00".
  635. [00:08:30] Current: 202376, peak: 202383, connected: 20, disconnected: 15, rate: 5/s
  636. [00:08:31] Current: 202360, peak: 202383, connected: 24, disconnected: 40, rate: -16/s
  637. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  638.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:28 +00:00".
  639. [00:08:32] Current: 202411, peak: 202411, connected: 67, disconnected: 16, rate: 51/s
  640. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  641.       Failed writing message. Aborting connection.
  642. System.InvalidOperationException: Writing is not allowed after writer was completed.
  643.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  644.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  645.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  646.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  647. [00:08:33] Current: 202450, peak: 202451, connected: 40, disconnected: 1, rate: 39/s
  648. [00:08:34] Current: 202479, peak: 202479, connected: 34, disconnected: 5, rate: 29/s
  649. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  650.       Failed writing message. Aborting connection.
  651. System.InvalidOperationException: Writing is not allowed after writer was completed.
  652.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  653.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  654.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  655.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  656. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  657.       Failed writing message. Aborting connection.
  658. System.InvalidOperationException: Writing is not allowed after writer was completed.
  659.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  660.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  661.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  662.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  663. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  664.       Failed writing message. Aborting connection.
  665. System.InvalidOperationException: Writing is not allowed after writer was completed.
  666.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  667.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  668.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  669.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  670. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  671.       Failed writing message. Aborting connection.
  672. System.InvalidOperationException: Writing is not allowed after writer was completed.
  673.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  674.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  675.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  676.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  677. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  678.       Failed writing message. Aborting connection.
  679. System.InvalidOperationException: Writing is not allowed after writer was completed.
  680.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  681.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  682.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  683.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  684. [00:08:35] Current: 202499, peak: 202499, connected: 20, disconnected: 0, rate: 20/s
  685. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  686.       Failed writing message. Aborting connection.
  687. System.InvalidOperationException: Writing is not allowed after writer was completed.
  688.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  689.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  690.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  691.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  692. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  693.       Failed writing message. Aborting connection.
  694. System.InvalidOperationException: Writing is not allowed after writer was completed.
  695.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  696.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  697.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  698.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  699. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  700.       Failed writing message. Aborting connection.
  701. System.InvalidOperationException: Writing is not allowed after writer was completed.
  702.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  703.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  704.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  705.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  706. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  707.       Failed writing message. Aborting connection.
  708. System.InvalidOperationException: Writing is not allowed after writer was completed.
  709.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  710.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  711.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  712.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  713. [00:08:36] Current: 202509, peak: 202509, connected: 10, disconnected: 0, rate: 10/s
  714. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  715.       Failed writing message. Aborting connection.
  716. System.InvalidOperationException: Writing is not allowed after writer was completed.
  717.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  718.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  719.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  720.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  721. [00:08:37] Current: 202517, peak: 202517, connected: 9, disconnected: 1, rate: 8/s
  722. [00:08:38] Current: 202533, peak: 202533, connected: 17, disconnected: 1, rate: 16/s
  723. [00:08:39] Current: 202726, peak: 202726, connected: 194, disconnected: 1, rate: 193/s
  724. [00:08:40] Current: 203074, peak: 203074, connected: 349, disconnected: 1, rate: 348/s
  725. [00:08:41] Current: 203414, peak: 203414, connected: 340, disconnected: 0, rate: 340/s
  726. [00:08:42] Current: 203528, peak: 203528, connected: 114, disconnected: 0, rate: 114/s
  727. [00:08:43] Current: 203632, peak: 203632, connected: 104, disconnected: 0, rate: 104/s
  728. [00:08:44] Current: 203673, peak: 203673, connected: 41, disconnected: 0, rate: 41/s
  729. [00:08:45] Current: 203782, peak: 203782, connected: 109, disconnected: 0, rate: 109/s
  730. [00:08:46] Current: 203845, peak: 203845, connected: 63, disconnected: 0, rate: 63/s
  731. [00:08:47] Current: 204145, peak: 204145, connected: 300, disconnected: 0, rate: 300/s
  732. [00:08:48] Current: 204548, peak: 204548, connected: 403, disconnected: 0, rate: 403/s
  733. [00:08:51] Current: 204796, peak: 204796, connected: 248, disconnected: 0, rate: 248/s
  734. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  735.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:47 +00:00".
  736. [00:08:52] Current: 204859, peak: 204859, connected: 63, disconnected: 0, rate: 63/s
  737. [00:08:53] Current: 204864, peak: 204864, connected: 7, disconnected: 2, rate: 5/s
  738. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  739.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:50 +00:00".
  740. [00:08:54] Current: 204936, peak: 204936, connected: 74, disconnected: 2, rate: 72/s
  741. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  742.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:51 +00:00".
  743. [00:08:55] Current: 204951, peak: 204954, connected: 22, disconnected: 7, rate: 15/s
  744. [00:08:56] Current: 204961, peak: 204961, connected: 11, disconnected: 1, rate: 10/s
  745. [00:08:57] Current: 204974, peak: 204974, connected: 13, disconnected: 0, rate: 13/s
  746. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  747.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:54 +00:00".
  748. [00:08:58] Current: 205059, peak: 205059, connected: 85, disconnected: 0, rate: 85/s
  749. [00:08:59] Current: 205063, peak: 205064, connected: 5, disconnected: 1, rate: 4/s
  750. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  751.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:56 +00:00".
  752. [00:09:00] Current: 205069, peak: 205071, connected: 8, disconnected: 2, rate: 6/s
  753. [00:09:01] Current: 205066, peak: 205071, connected: 1, disconnected: 4, rate: -3/s
  754. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  755.       Failed writing message. Aborting connection.
  756. System.InvalidOperationException: Writing is not allowed after writer was completed.
  757.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  758.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  759.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  760.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  761. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  762.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:04:58 +00:00".
  763. [00:09:02] Current: 205067, peak: 205071, connected: 1, disconnected: 0, rate: 1/s
  764. [00:09:03] Current: 205067, peak: 205071, connected: 1, disconnected: 1, rate: 0/s
  765. [00:09:04] Current: 205070, peak: 205071, connected: 3, disconnected: 0, rate: 3/s
  766. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  767.       Failed writing message. Aborting connection.
  768. System.InvalidOperationException: Writing is not allowed after writer was completed.
  769.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  770.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  771.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  772.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  773. [00:09:05] Current: 205079, peak: 205079, connected: 9, disconnected: 0, rate: 9/s
  774. [00:09:06] Current: 205099, peak: 205099, connected: 23, disconnected: 3, rate: 20/s
  775. [00:09:07] Current: 205121, peak: 205121, connected: 22, disconnected: 0, rate: 22/s
  776. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  777.       Failed writing message. Aborting connection.
  778. System.InvalidOperationException: Writing is not allowed after writer was completed.
  779.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  780.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  781.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  782.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  783. [00:09:08] Current: 205137, peak: 205137, connected: 19, disconnected: 3, rate: 16/s
  784. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  785.       Failed writing message. Aborting connection.
  786. System.InvalidOperationException: Writing is not allowed after writer was completed.
  787.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  788.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  789.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  790.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  791. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  792.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:05 +00:00".
  793. [00:09:09] Current: 205162, peak: 205162, connected: 27, disconnected: 2, rate: 25/s
  794. [00:09:12] Current: 205182, peak: 205182, connected: 24, disconnected: 4, rate: 20/s
  795. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  796.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:08 +00:00".
  797. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  798.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:09 +00:00".
  799. [00:09:13] Current: 205164, peak: 205190, connected: 16, disconnected: 34, rate: -18/s
  800. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  801.       Failed writing message. Aborting connection.
  802. System.InvalidOperationException: Writing is not allowed after writer was completed.
  803.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  804.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  805.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  806.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  807. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  808.       Failed writing message. Aborting connection.
  809. System.InvalidOperationException: Writing is not allowed after writer was completed.
  810.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  811.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  812.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  813.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  814. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  815.       Failed writing message. Aborting connection.
  816. System.InvalidOperationException: Writing is not allowed after writer was completed.
  817.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  818.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  819.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  820.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  821. [00:09:14] Current: 205120, peak: 205190, connected: 17, disconnected: 61, rate: -44/s
  822. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  823.       Failed writing message. Aborting connection.
  824. System.InvalidOperationException: Writing is not allowed after writer was completed.
  825.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  826.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  827.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  828.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  829. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  830.       Failed writing message. Aborting connection.
  831. System.InvalidOperationException: Writing is not allowed after writer was completed.
  832.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  833.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  834.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  835.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  836. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  837.       Failed writing message. Aborting connection.
  838. System.InvalidOperationException: Writing is not allowed after writer was completed.
  839.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  840.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  841.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  842.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  843. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  844.       Failed writing message. Aborting connection.
  845. System.InvalidOperationException: Writing is not allowed after writer was completed.
  846.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  847.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  848.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  849.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  850. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  851.       Failed writing message. Aborting connection.
  852. System.InvalidOperationException: Writing is not allowed after writer was completed.
  853.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  854.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  855.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  856.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  857. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  858.       Failed writing message. Aborting connection.
  859. System.InvalidOperationException: Writing is not allowed after writer was completed.
  860.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  861.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  862.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  863.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  864. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  865.       Failed writing message. Aborting connection.
  866. System.InvalidOperationException: Writing is not allowed after writer was completed.
  867.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  868.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  869.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  870.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  871. [00:09:15] Current: 205131, peak: 205190, connected: 18, disconnected: 7, rate: 11/s
  872. [00:09:16] Current: 205131, peak: 205190, connected: 30, disconnected: 30, rate: 0/s
  873. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  874.       Failed writing message. Aborting connection.
  875. System.InvalidOperationException: Writing is not allowed after writer was completed.
  876.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  877.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  878.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  879.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  880. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  881.       Failed writing message. Aborting connection.
  882. System.InvalidOperationException: Writing is not allowed after writer was completed.
  883.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  884.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  885.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  886.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  887. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  888.       Failed writing message. Aborting connection.
  889. System.InvalidOperationException: Writing is not allowed after writer was completed.
  890.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  891.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  892.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  893.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  894. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  895.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:12 +00:00".
  896. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  897.       Failed writing message. Aborting connection.
  898. System.InvalidOperationException: Writing is not allowed after writer was completed.
  899.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  900.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  901.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  902.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  903. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  904.       Failed writing message. Aborting connection.
  905. System.InvalidOperationException: Writing is not allowed after writer was completed.
  906.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  907.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  908.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  909.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  910. [00:09:17] Current: 205128, peak: 205190, connected: 45, disconnected: 48, rate: -3/s
  911. [00:09:18] Current: 205137, peak: 205190, connected: 22, disconnected: 13, rate: 9/s
  912. [00:09:19] Current: 205105, peak: 205190, connected: 19, disconnected: 51, rate: -32/s
  913. [00:09:20] Current: 205118, peak: 205190, connected: 19, disconnected: 6, rate: 13/s
  914. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  915.       Failed writing message. Aborting connection.
  916. System.InvalidOperationException: Writing is not allowed after writer was completed.
  917.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  918.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  919.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  920.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  921. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  922.       Failed writing message. Aborting connection.
  923. System.InvalidOperationException: Writing is not allowed after writer was completed.
  924.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  925.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  926.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  927.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  928. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  929.       Failed writing message. Aborting connection.
  930. System.InvalidOperationException: Writing is not allowed after writer was completed.
  931.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  932.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  933.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  934.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  935. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  936.       Failed writing message. Aborting connection.
  937. System.InvalidOperationException: Writing is not allowed after writer was completed.
  938.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  939.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  940.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  941.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  942. [00:09:21] Current: 205114, peak: 205190, connected: 2, disconnected: 6, rate: -4/s
  943. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  944.       Failed writing message. Aborting connection.
  945. System.InvalidOperationException: Writing is not allowed after writer was completed.
  946.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  947.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  948.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  949.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  950. [00:09:22] Current: 205119, peak: 205190, connected: 9, disconnected: 4, rate: 5/s
  951. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  952.       Failed writing message. Aborting connection.
  953. System.InvalidOperationException: Writing is not allowed after writer was completed.
  954.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  955.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  956.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  957.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  958. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  959.       Failed writing message. Aborting connection.
  960. System.InvalidOperationException: Writing is not allowed after writer was completed.
  961.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  962.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  963.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  964.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  965. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  966.       Failed writing message. Aborting connection.
  967. System.InvalidOperationException: Writing is not allowed after writer was completed.
  968.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  969.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  970.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  971.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  972. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  973.       Failed writing message. Aborting connection.
  974. System.InvalidOperationException: Writing is not allowed after writer was completed.
  975.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  976.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  977.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  978.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  979. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  980.       Failed writing message. Aborting connection.
  981. System.InvalidOperationException: Writing is not allowed after writer was completed.
  982.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  983.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  984.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  985.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  986. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  987.       Failed writing message. Aborting connection.
  988. System.InvalidOperationException: Writing is not allowed after writer was completed.
  989.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  990.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  991.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  992.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  993. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  994.       Failed writing message. Aborting connection.
  995. System.InvalidOperationException: Writing is not allowed after writer was completed.
  996.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  997.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  998.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  999.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1000. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1001.       Failed writing message. Aborting connection.
  1002. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1003.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1004.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1005.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1006.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1007. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1008.       Failed writing message. Aborting connection.
  1009. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1010.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1011.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1012.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1013.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1014. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1015.       Failed writing message. Aborting connection.
  1016. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1017.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1018.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1019.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1020.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1021. [00:09:23] Current: 205091, peak: 205190, connected: 4, disconnected: 32, rate: -28/s
  1022. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1023.       Failed writing message. Aborting connection.
  1024. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1025.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1026.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1027.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1028.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1029. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1030.       Failed writing message. Aborting connection.
  1031. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1032.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1033.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1034.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1035.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1036. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1037.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:20 +00:00".
  1038. [00:09:24] Current: 205089, peak: 205190, connected: 2, disconnected: 4, rate: -2/s
  1039. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1040.       Failed writing message. Aborting connection.
  1041. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1042.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1043.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1044.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1045.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1046. [00:09:25] Current: 205088, peak: 205190, connected: 7, disconnected: 8, rate: -1/s
  1047. [00:09:26] Current: 205086, peak: 205190, connected: 16, disconnected: 18, rate: -2/s
  1048. [00:09:27] Current: 205148, peak: 205190, connected: 71, disconnected: 9, rate: 62/s
  1049. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1050.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:24 +00:00".
  1051. [00:09:28] Current: 205442, peak: 205442, connected: 297, disconnected: 3, rate: 294/s
  1052. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1053.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:25 +00:00".
  1054. [00:09:29] Current: 205839, peak: 205839, connected: 397, disconnected: 0, rate: 397/s
  1055. [00:09:30] Current: 205971, peak: 205971, connected: 132, disconnected: 0, rate: 132/s
  1056. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1057.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:27 +00:00".
  1058. [00:09:31] Current: 205990, peak: 205990, connected: 31, disconnected: 12, rate: 19/s
  1059. [00:09:32] Current: 205995, peak: 205998, connected: 12, disconnected: 7, rate: 5/s
  1060. [00:09:33] Current: 206054, peak: 206062, connected: 76, disconnected: 17, rate: 59/s
  1061. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1062.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:30 +00:00".
  1063. [00:09:34] Current: 206061, peak: 206062, connected: 8, disconnected: 1, rate: 7/s
  1064. [00:09:35] Current: 206076, peak: 206076, connected: 15, disconnected: 0, rate: 15/s
  1065. [00:09:36] Current: 206087, peak: 206087, connected: 15, disconnected: 4, rate: 11/s
  1066. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1067.       Failed writing message. Aborting connection.
  1068. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1069.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1070.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1071.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1072.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1073. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1074.       Failed writing message. Aborting connection.
  1075. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1076.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1077.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1078.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1079.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1080. [00:09:37] Current: 206121, peak: 206121, connected: 34, disconnected: 0, rate: 34/s
  1081. [00:09:39] Current: 206156, peak: 206156, connected: 38, disconnected: 3, rate: 35/s
  1082. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1083.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:35 +00:00".
  1084. [00:09:40] Current: 206205, peak: 206205, connected: 50, disconnected: 1, rate: 49/s
  1085. [00:09:41] Current: 206207, peak: 206207, connected: 2, disconnected: 0, rate: 2/s
  1086. [00:09:42] Current: 206211, peak: 206211, connected: 4, disconnected: 0, rate: 4/s
  1087. [00:09:43] Current: 206259, peak: 206259, connected: 49, disconnected: 1, rate: 48/s
  1088. [00:09:44] Current: 206442, peak: 206442, connected: 187, disconnected: 4, rate: 183/s
  1089. [00:09:45] Current: 206763, peak: 206763, connected: 321, disconnected: 0, rate: 321/s
  1090. [00:09:46] Current: 206946, peak: 206946, connected: 189, disconnected: 6, rate: 183/s
  1091. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1092.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:42 +00:00".
  1093. [00:09:47] Current: 207080, peak: 207080, connected: 184, disconnected: 50, rate: 134/s
  1094. [00:09:48] Current: 207220, peak: 207224, connected: 172, disconnected: 32, rate: 140/s
  1095. [00:09:49] Current: 207218, peak: 207225, connected: 15, disconnected: 17, rate: -2/s
  1096. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1097.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:46 +00:00".
  1098. [00:09:50] Current: 207234, peak: 207235, connected: 35, disconnected: 19, rate: 16/s
  1099. [00:09:51] Current: 207239, peak: 207245, connected: 25, disconnected: 20, rate: 5/s
  1100. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1101.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:05:48 +00:00".
  1102. [00:09:52] Current: 207274, peak: 207274, connected: 66, disconnected: 31, rate: 35/s
  1103. [00:09:53] Current: 207310, peak: 207310, connected: 36, disconnected: 0, rate: 36/s
  1104. [00:09:54] Current: 207331, peak: 207331, connected: 23, disconnected: 2, rate: 21/s
  1105. [00:09:55] Current: 207413, peak: 207413, connected: 85, disconnected: 3, rate: 82/s
  1106. [00:09:56] Current: 207498, peak: 207498, connected: 98, disconnected: 13, rate: 85/s
  1107. [00:09:57] Current: 207800, peak: 207800, connected: 302, disconnected: 0, rate: 302/s
  1108. [00:09:58] Current: 208206, peak: 208206, connected: 408, disconnected: 2, rate: 406/s
  1109. [00:09:59] Current: 208611, peak: 208611, connected: 405, disconnected: 0, rate: 405/s
  1110. [00:10:00] Current: 208984, peak: 208984, connected: 373, disconnected: 0, rate: 373/s
  1111. [00:10:01] Current: 209344, peak: 209344, connected: 361, disconnected: 1, rate: 360/s
  1112. [00:10:02] Current: 209453, peak: 209453, connected: 116, disconnected: 7, rate: 109/s
  1113. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1114.       Failed writing message. Aborting connection.
  1115. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1116.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1117.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1118.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1119.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1120. [00:10:03] Current: 209624, peak: 209624, connected: 171, disconnected: 0, rate: 171/s
  1121. [00:10:04] Current: 209709, peak: 209709, connected: 85, disconnected: 0, rate: 85/s
  1122. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1123.       Failed writing message. Aborting connection.
  1124. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1125.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1126.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1127.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1128.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1129. [00:10:05] Current: 209846, peak: 209846, connected: 137, disconnected: 0, rate: 137/s
  1130. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1131.       Failed writing message. Aborting connection.
  1132. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1133.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1134.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1135.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1136.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1137. [00:10:06] Current: 209893, peak: 209893, connected: 47, disconnected: 0, rate: 47/s
  1138. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1139.       Failed writing message. Aborting connection.
  1140. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1141.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1142.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1143.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1144.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1145. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1146.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:04 +00:00".
  1147. [00:10:07] Current: 209935, peak: 209935, connected: 47, disconnected: 5, rate: 42/s
  1148. [00:10:09] Current: 209987, peak: 209987, connected: 52, disconnected: 0, rate: 52/s
  1149. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1150.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:06 +00:00".
  1151. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1152.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:06 +00:00".
  1153. [00:10:10] Current: 209997, peak: 209997, connected: 12, disconnected: 2, rate: 10/s
  1154. [00:10:11] Current: 210006, peak: 210006, connected: 10, disconnected: 1, rate: 9/s
  1155. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1156.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:08 +00:00".
  1157. [00:10:12] Current: 210020, peak: 210020, connected: 14, disconnected: 0, rate: 14/s
  1158. [00:10:13] Current: 210038, peak: 210038, connected: 28, disconnected: 10, rate: 18/s
  1159. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1160.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:10 +00:00".
  1161. [00:10:14] Current: 210180, peak: 210180, connected: 148, disconnected: 6, rate: 142/s
  1162. [00:10:15] Current: 210556, peak: 210556, connected: 376, disconnected: 0, rate: 376/s
  1163. [00:10:16] Current: 210905, peak: 210905, connected: 349, disconnected: 0, rate: 349/s
  1164. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1165.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:13 +00:00".
  1166. [00:10:17] Current: 211003, peak: 211003, connected: 99, disconnected: 1, rate: 98/s
  1167. [00:10:18] Current: 211058, peak: 211058, connected: 55, disconnected: 0, rate: 55/s
  1168. [00:10:19] Current: 211078, peak: 211078, connected: 20, disconnected: 0, rate: 20/s
  1169. [00:10:20] Current: 211099, peak: 211099, connected: 21, disconnected: 0, rate: 21/s
  1170. [00:10:21] Current: 211104, peak: 211104, connected: 5, disconnected: 0, rate: 5/s
  1171. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1172.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:18 +00:00".
  1173. [00:10:22] Current: 211109, peak: 211109, connected: 5, disconnected: 0, rate: 5/s
  1174. [00:10:23] Current: 211112, peak: 211112, connected: 3, disconnected: 0, rate: 3/s
  1175. [00:10:24] Current: 211124, peak: 211124, connected: 12, disconnected: 0, rate: 12/s
  1176. [00:10:26] Current: 211138, peak: 211138, connected: 14, disconnected: 0, rate: 14/s
  1177. [00:10:27] Current: 211140, peak: 211140, connected: 2, disconnected: 0, rate: 2/s
  1178. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1179.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:23 +00:00".
  1180. [00:10:28] Current: 211143, peak: 211143, connected: 3, disconnected: 0, rate: 3/s
  1181. [00:10:29] Current: 211145, peak: 211145, connected: 2, disconnected: 0, rate: 2/s
  1182. [00:10:31] Current: 211145, peak: 211145, connected: 0, disconnected: 0, rate: 0/s
  1183. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1184.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:27 +00:00".
  1185. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1186.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:27 +00:00".
  1187. [00:10:32] Current: 211151, peak: 211151, connected: 6, disconnected: 0, rate: 6/s
  1188. [00:10:33] Current: 211156, peak: 211156, connected: 5, disconnected: 0, rate: 5/s
  1189. [00:10:34] Current: 211120, peak: 211165, connected: 11, disconnected: 47, rate: -36/s
  1190. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1191.       Failed writing message. Aborting connection.
  1192. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1193.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1194.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1195.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1196.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1197. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1198.       Failed writing message. Aborting connection.
  1199. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1200.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1201.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1202.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1203.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1204. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1205.       Failed writing message. Aborting connection.
  1206. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1207.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1208.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1209.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1210.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1211. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1212.       Failed writing message. Aborting connection.
  1213. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1214.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1215.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1216.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1217.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1218. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1219.       Failed writing message. Aborting connection.
  1220. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1221.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1222.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1223.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1224.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1225. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1226.       Failed writing message. Aborting connection.
  1227. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1228.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1229.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1230.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1231.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1232. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1233.       Failed writing message. Aborting connection.
  1234. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1235.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1236.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1237.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1238.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1239. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1240.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:31 +00:00".
  1241. [00:10:35] Current: 211064, peak: 211165, connected: 15, disconnected: 71, rate: -56/s
  1242. [00:10:36] Current: 211030, peak: 211165, connected: 14, disconnected: 48, rate: -34/s
  1243. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1244.       Failed writing message. Aborting connection.
  1245. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1246.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1247.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1248.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1249.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1250. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1251.       Failed writing message. Aborting connection.
  1252. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1253.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1254.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1255.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1256.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1257. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1258.       Failed writing message. Aborting connection.
  1259. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1260.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1261.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1262.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1263.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1264. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1265.       Failed writing message. Aborting connection.
  1266. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1267.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1268.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1269.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1270.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1271. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1272.       Failed writing message. Aborting connection.
  1273. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1274.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1275.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1276.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1277.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1278. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1279.       Failed writing message. Aborting connection.
  1280. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1281.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1282.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1283.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1284.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1285. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1286.       Failed writing message. Aborting connection.
  1287. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1288.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1289.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1290.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1291.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1292. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1293.       Failed writing message. Aborting connection.
  1294. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1295.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1296.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1297.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1298.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1299. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1300.       Failed writing message. Aborting connection.
  1301. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1302.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1303.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1304.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1305.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1306. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1307.       Failed writing message. Aborting connection.
  1308. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1309.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1310.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1311.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1312.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1313. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1314.       Failed writing message. Aborting connection.
  1315. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1316.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1317.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1318.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1319.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1320. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1321.       Failed writing message. Aborting connection.
  1322. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1323.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1324.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1325.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1326.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1327. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1328.       Failed writing message. Aborting connection.
  1329. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1330.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1331.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1332.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1333.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1334. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1335.       Failed writing message. Aborting connection.
  1336. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1337.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1338.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1339.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1340.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1341. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1342.       Failed writing message. Aborting connection.
  1343. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1344.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1345.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1346.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1347.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1348. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1349.       Failed writing message. Aborting connection.
  1350. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1351.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1352.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1353.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1354.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1355. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1356.       Failed writing message. Aborting connection.
  1357. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1358.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1359.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1360.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1361.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1362. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1363.       Failed writing message. Aborting connection.
  1364. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1365.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1366.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1367.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1368.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1369. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1370.       Failed writing message. Aborting connection.
  1371. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1372.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1373.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1374.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1375.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1376. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1377.       Failed writing message. Aborting connection.
  1378. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1379.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1380.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1381.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1382.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1383. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1384.       Failed writing message. Aborting connection.
  1385. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1386.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1387.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1388.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1389.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1390. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1391.       Failed writing message. Aborting connection.
  1392. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1393.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1394.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1395.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1396.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1397. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1398.       Failed writing message. Aborting connection.
  1399. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1400.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1401.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1402.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1403.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1404. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1405.       Failed writing message. Aborting connection.
  1406. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1407.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1408.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1409.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1410.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1411. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1412.       Failed writing message. Aborting connection.
  1413. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1414.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1415.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1416.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1417.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1418. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1419.       Failed writing message. Aborting connection.
  1420. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1421.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1422.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1423.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1424.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1425. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1426.       Failed writing message. Aborting connection.
  1427. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1428.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1429.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1430.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1431.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1432. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1433.       Failed writing message. Aborting connection.
  1434. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1435.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1436.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1437.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1438.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1439. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1440.       Failed writing message. Aborting connection.
  1441. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1442.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1443.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1444.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1445.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1446. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1447.       Failed writing message. Aborting connection.
  1448. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1449.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1450.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1451.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1452.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1453. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1454.       Failed writing message. Aborting connection.
  1455. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1456.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1457.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1458.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1459.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1460. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1461.       Failed writing message. Aborting connection.
  1462. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1463.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1464.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1465.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1466.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1467. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1468.       Failed writing message. Aborting connection.
  1469. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1470.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1471.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1472.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1473.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1474. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1475.       Failed writing message. Aborting connection.
  1476. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1477.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1478.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1479.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1480.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1481. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1482.       Failed writing message. Aborting connection.
  1483. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1484.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1485.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1486.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1487.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1488. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1489.       Failed writing message. Aborting connection.
  1490. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1491.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1492.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1493.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1494.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1495. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1496.       Failed writing message. Aborting connection.
  1497. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1498.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1499.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1500.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1501.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1502. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1503.       Failed writing message. Aborting connection.
  1504. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1505.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1506.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1507.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1508.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1509. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1510.       Failed writing message. Aborting connection.
  1511. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1512.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1513.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1514.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1515.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1516. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1517.       Failed writing message. Aborting connection.
  1518. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1519.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1520.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1521.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1522.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1523. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1524.       Failed writing message. Aborting connection.
  1525. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1526.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1527.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1528.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1529.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1530. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1531.       Failed writing message. Aborting connection.
  1532. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1533.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1534.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1535.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1536.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1537. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1538.       Failed writing message. Aborting connection.
  1539. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1540.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1541.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1542.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1543.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1544. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1545.       Failed writing message. Aborting connection.
  1546. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1547.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1548.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1549.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1550.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1551. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1552.       Failed writing message. Aborting connection.
  1553. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1554.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1555.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1556.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1557.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1558. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1559.       Failed writing message. Aborting connection.
  1560. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1561.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1562.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1563.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1564.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1565. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1566.       Failed writing message. Aborting connection.
  1567. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1568.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1569.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1570.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1571.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1572. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1573.       Failed writing message. Aborting connection.
  1574. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1575.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1576.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1577.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1578.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1579. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1580.       Failed writing message. Aborting connection.
  1581. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1582.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1583.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1584.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1585.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1586. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1587.       Failed writing message. Aborting connection.
  1588. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1589.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1590.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1591.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1592.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1593. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1594.       Failed writing message. Aborting connection.
  1595. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1596.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1597.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1598.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1599.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1600. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1601.       Failed writing message. Aborting connection.
  1602. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1603.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1604.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1605.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1606.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1607. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1608.       Failed writing message. Aborting connection.
  1609. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1610.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1611.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1612.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1613.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1614. [00:10:37] Current: 211001, peak: 211165, connected: 26, disconnected: 55, rate: -29/s
  1615. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1616.       Failed writing message. Aborting connection.
  1617. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1618.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1619.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1620.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1621.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1622. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1623.       Failed writing message. Aborting connection.
  1624. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1625.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1626.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1627.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1628.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1629. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1630.       Failed writing message. Aborting connection.
  1631. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1632.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1633.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1634.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1635.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1636. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1637.       Failed writing message. Aborting connection.
  1638. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1639.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1640.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1641.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1642.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1643. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1644.       Failed writing message. Aborting connection.
  1645. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1646.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1647.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1648.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1649.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1650. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1651.       Failed writing message. Aborting connection.
  1652. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1653.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1654.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1655.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1656.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1657. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1658.       Failed writing message. Aborting connection.
  1659. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1660.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1661.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1662.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1663.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1664. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1665.       Failed writing message. Aborting connection.
  1666. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1667.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1668.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1669.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1670.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1671. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1672.       Failed writing message. Aborting connection.
  1673. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1674.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1675.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1676.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1677.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1678. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1679.       Failed writing message. Aborting connection.
  1680. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1681.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1682.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1683.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1684.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1685. [00:10:38] Current: 211006, peak: 211165, connected: 27, disconnected: 22, rate: 5/s
  1686. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1687.       Failed writing message. Aborting connection.
  1688. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1689.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1690.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1691.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1692.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1693. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1694.       Failed writing message. Aborting connection.
  1695. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1696.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1697.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1698.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1699.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1700. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1701.       Failed writing message. Aborting connection.
  1702. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1703.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1704.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1705.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1706.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1707. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1708.       Failed writing message. Aborting connection.
  1709. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1710.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1711.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1712.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1713.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1714. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1715.       Failed writing message. Aborting connection.
  1716. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1717.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1718.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1719.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1720.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1721. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1722.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:35 +00:00".
  1723. [00:10:39] Current: 210983, peak: 211165, connected: 31, disconnected: 54, rate: -23/s
  1724. [00:10:40] Current: 210994, peak: 211165, connected: 11, disconnected: 0, rate: 11/s
  1725. [00:10:41] Current: 211001, peak: 211165, connected: 21, disconnected: 14, rate: 7/s
  1726. [00:10:42] Current: 211039, peak: 211165, connected: 43, disconnected: 5, rate: 38/s
  1727. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1728.       Failed writing message. Aborting connection.
  1729. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1730.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1731.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1732.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1733.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1734. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1735.       Failed writing message. Aborting connection.
  1736. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1737.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1738.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1739.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1740.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1741. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1742.       Failed writing message. Aborting connection.
  1743. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1744.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1745.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1746.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1747.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1748. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1749.       Failed writing message. Aborting connection.
  1750. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1751.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1752.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1753.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1754.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1755. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1756.       Failed writing message. Aborting connection.
  1757. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1758.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1759.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1760.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1761.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1762. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1763.       Failed writing message. Aborting connection.
  1764. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1765.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1766.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1767.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1768.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1769. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1770.       Failed writing message. Aborting connection.
  1771. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1772.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1773.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1774.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1775.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1776. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1777.       Failed writing message. Aborting connection.
  1778. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1779.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1780.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1781.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1782.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1783. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1784.       Failed writing message. Aborting connection.
  1785. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1786.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1787.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1788.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1789.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1790. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1791.       Failed writing message. Aborting connection.
  1792. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1793.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1794.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1795.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1796.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1797. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1798.       Failed writing message. Aborting connection.
  1799. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1800.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1801.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1802.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1803.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1804. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1805.       Failed writing message. Aborting connection.
  1806. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1807.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1808.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1809.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1810.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1811. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1812.       Failed writing message. Aborting connection.
  1813. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1814.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1815.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1816.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1817.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1818. [00:10:43] Current: 211092, peak: 211165, connected: 56, disconnected: 3, rate: 53/s
  1819. [00:10:44] Current: 211127, peak: 211165, connected: 39, disconnected: 4, rate: 35/s
  1820. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1821.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:41 +00:00".
  1822. [00:10:45] Current: 211079, peak: 211165, connected: 44, disconnected: 92, rate: -48/s
  1823. [00:10:46] Current: 211103, peak: 211165, connected: 24, disconnected: 0, rate: 24/s
  1824. [00:10:48] Current: 211112, peak: 211165, connected: 11, disconnected: 2, rate: 9/s
  1825. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1826.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:44 +00:00".
  1827. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1828.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:44 +00:00".
  1829. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1830.       Failed writing message. Aborting connection.
  1831. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1832.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1833.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1834.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1835.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1836. [00:10:49] Current: 211111, peak: 211165, connected: 14, disconnected: 15, rate: -1/s
  1837. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1838.       Failed writing message. Aborting connection.
  1839. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1840.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1841.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1842.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1843.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1844. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1845.       Failed writing message. Aborting connection.
  1846. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1847.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1848.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1849.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1850.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1851. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1852.       Failed writing message. Aborting connection.
  1853. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1854.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1855.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1856.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1857.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1858. [00:10:50] Current: 211120, peak: 211165, connected: 27, disconnected: 18, rate: 9/s
  1859. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  1860.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:46 +00:00".
  1861. [00:10:51] Current: 211180, peak: 211181, connected: 68, disconnected: 8, rate: 60/s
  1862. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1863.       Failed writing message. Aborting connection.
  1864. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1865.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1866.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1867.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1868.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1869. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1870.       Failed writing message. Aborting connection.
  1871. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1872.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1873.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1874.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1875.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1876. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1877.       Failed writing message. Aborting connection.
  1878. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1879.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1880.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1881.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1882.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1883. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1884.       Failed writing message. Aborting connection.
  1885. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1886.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1887.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1888.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1889.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1890. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1891.       Failed writing message. Aborting connection.
  1892. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1893.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1894.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1895.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1896.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1897. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1898.       Failed writing message. Aborting connection.
  1899. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1900.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1901.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1902.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1903.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1904. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1905.       Failed writing message. Aborting connection.
  1906. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1907.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1908.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1909.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1910.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1911. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1912.       Failed writing message. Aborting connection.
  1913. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1914.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1915.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1916.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1917.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1918. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1919.       Failed writing message. Aborting connection.
  1920. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1921.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1922.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1923.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1924.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1925. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1926.       Failed writing message. Aborting connection.
  1927. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1928.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1929.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1930.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1931.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1932. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1933.       Failed writing message. Aborting connection.
  1934. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1935.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1936.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1937.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1938.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1939. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1940.       Failed writing message. Aborting connection.
  1941. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1942.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1943.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1944.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1945.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1946. [00:10:52] Current: 211175, peak: 211181, connected: 13, disconnected: 18, rate: -5/s
  1947. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1948.       Failed writing message. Aborting connection.
  1949. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1950.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1951.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1952.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1953.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1954. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1955.       Failed writing message. Aborting connection.
  1956. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1957.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1958.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1959.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1960.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1961. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1962.       Failed writing message. Aborting connection.
  1963. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1964.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1965.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1966.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1967.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1968. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1969.       Failed writing message. Aborting connection.
  1970. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1971.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1972.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1973.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1974.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1975. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1976.       Failed writing message. Aborting connection.
  1977. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1978.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1979.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1980.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1981.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1982. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1983.       Failed writing message. Aborting connection.
  1984. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1985.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1986.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1987.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1988.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1989. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1990.       Failed writing message. Aborting connection.
  1991. System.InvalidOperationException: Writing is not allowed after writer was completed.
  1992.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  1993.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1994.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  1995.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  1996. [00:10:53] Current: 211167, peak: 211181, connected: 3, disconnected: 11, rate: -8/s
  1997. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  1998.       Failed writing message. Aborting connection.
  1999. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2000.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2001.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2002.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2003.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2004. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2005.       Failed writing message. Aborting connection.
  2006. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2007.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2008.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2009.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2010.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2011. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2012.       Failed writing message. Aborting connection.
  2013. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2014.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2015.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2016.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2017.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2018. [00:10:54] Current: 211156, peak: 211181, connected: 11, disconnected: 22, rate: -11/s
  2019. [00:10:55] Current: 211143, peak: 211181, connected: 8, disconnected: 21, rate: -13/s
  2020. [00:10:56] Current: 211150, peak: 211181, connected: 11, disconnected: 4, rate: 7/s
  2021. [00:10:57] Current: 211183, peak: 211185, connected: 40, disconnected: 7, rate: 33/s
  2022. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2023.       Failed writing message. Aborting connection.
  2024. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2025.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2026.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2027.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2028.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2029. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2030.       Failed writing message. Aborting connection.
  2031. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2032.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2033.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2034.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2035.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2036. [00:10:58] Current: 211122, peak: 211185, connected: 11, disconnected: 72, rate: -61/s
  2037. [00:10:59] Current: 211113, peak: 211185, connected: 1, disconnected: 10, rate: -9/s
  2038. [00:11:00] Current: 211107, peak: 211185, connected: 5, disconnected: 11, rate: -6/s
  2039. [00:11:01] Current: 211133, peak: 211185, connected: 28, disconnected: 2, rate: 26/s
  2040. [00:11:02] Current: 211172, peak: 211185, connected: 42, disconnected: 3, rate: 39/s
  2041. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2042.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:06:59 +00:00".
  2043. [00:11:03] Current: 211099, peak: 211185, connected: 62, disconnected: 135, rate: -73/s
  2044. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2045.       Failed writing message. Aborting connection.
  2046. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2047.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2048.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2049.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2050.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2051. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2052.       Failed writing message. Aborting connection.
  2053. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2054.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2055.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2056.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2057.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2058. [00:11:04] Current: 211259, peak: 211259, connected: 165, disconnected: 5, rate: 160/s
  2059. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2060.       Failed writing message. Aborting connection.
  2061. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2062.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2063.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2064.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2065.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2066. [00:11:05] Current: 211320, peak: 211321, connected: 86, disconnected: 25, rate: 61/s
  2067. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2068.       Failed writing message. Aborting connection.
  2069. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2070.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2071.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2072.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2073.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2074. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2075.       Failed writing message. Aborting connection.
  2076. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2077.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2078.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2079.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2080.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2081. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2082.       Failed writing message. Aborting connection.
  2083. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2084.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2085.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2086.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2087.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2088. [00:11:07] Current: 211368, peak: 211368, connected: 55, disconnected: 7, rate: 48/s
  2089. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2090.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:04 +00:00".
  2091. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2092.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:04 +00:00".
  2093. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2094.       Failed writing message. Aborting connection.
  2095. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2096.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2097.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2098.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2099.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2100. [00:11:08] Current: 211413, peak: 211413, connected: 46, disconnected: 1, rate: 45/s
  2101. [00:11:09] Current: 211315, peak: 211414, connected: 21, disconnected: 119, rate: -98/s
  2102. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2103.       Failed writing message. Aborting connection.
  2104. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2105.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2106.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2107.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2108.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2109. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2110.       Failed writing message. Aborting connection.
  2111. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2112.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2113.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2114.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2115.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2116. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2117.       Failed writing message. Aborting connection.
  2118. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2119.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2120.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2121.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2122.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2123. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2124.       Failed writing message. Aborting connection.
  2125. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2126.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2127.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2128.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2129.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2130. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2131.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:06 +00:00".
  2132. [00:11:10] Current: 211170, peak: 211414, connected: 43, disconnected: 188, rate: -145/s
  2133. [00:11:11] Current: 211061, peak: 211414, connected: 12, disconnected: 121, rate: -109/s
  2134. [00:11:12] Current: 211048, peak: 211414, connected: 4, disconnected: 17, rate: -13/s
  2135. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2136.       Failed writing message. Aborting connection.
  2137. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2138.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2139.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2140.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2141.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2142. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2143.       Failed writing message. Aborting connection.
  2144. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2145.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2146.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2147.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2148.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2149. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2150.       Failed writing message. Aborting connection.
  2151. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2152.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2153.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2154.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2155.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2156. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2157.       Failed writing message. Aborting connection.
  2158. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2159.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2160.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2161.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2162.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2163. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2164.       Failed writing message. Aborting connection.
  2165. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2166.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2167.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2168.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2169.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2170. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2171.       Failed writing message. Aborting connection.
  2172. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2173.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2174.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2175.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2176.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2177. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2178.       Failed writing message. Aborting connection.
  2179. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2180.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2181.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2182.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2183.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2184. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2185.       Failed writing message. Aborting connection.
  2186. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2187.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2188.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2189.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2190.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2191. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2192.       Failed writing message. Aborting connection.
  2193. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2194.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2195.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2196.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2197.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2198. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2199.       Failed writing message. Aborting connection.
  2200. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2201.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2202.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2203.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2204.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2205. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2206.       Failed writing message. Aborting connection.
  2207. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2208.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2209.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2210.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2211.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2212. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2213.       Failed writing message. Aborting connection.
  2214. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2215.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2216.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2217.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2218.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2219. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2220.       Failed writing message. Aborting connection.
  2221. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2222.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2223.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2224.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2225.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2226. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2227.       Failed writing message. Aborting connection.
  2228. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2229.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2230.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2231.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2232.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2233. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2234.       Failed writing message. Aborting connection.
  2235. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2236.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2237.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2238.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2239.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2240. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2241.       Failed writing message. Aborting connection.
  2242. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2243.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2244.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2245.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2246.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2247. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2248.       Failed writing message. Aborting connection.
  2249. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2250.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2251.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2252.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2253.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2254. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2255.       Failed writing message. Aborting connection.
  2256. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2257.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2258.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2259.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2260.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2261. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2262.       Failed writing message. Aborting connection.
  2263. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2264.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2265.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2266.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2267.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2268. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2269.       Failed writing message. Aborting connection.
  2270. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2271.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2272.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2273.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2274.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2275. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2276.       Failed writing message. Aborting connection.
  2277. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2278.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2279.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2280.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2281.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2282. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2283.       Failed writing message. Aborting connection.
  2284. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2285.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2286.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2287.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2288.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2289. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2290.       Failed writing message. Aborting connection.
  2291. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2292.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2293.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2294.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2295.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2296. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2297.       Failed writing message. Aborting connection.
  2298. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2299.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2300.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2301.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2302.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2303. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2304.       Failed writing message. Aborting connection.
  2305. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2306.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2307.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2308.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2309.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2310. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2311.       Failed writing message. Aborting connection.
  2312. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2313.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2314.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2315.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2316.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2317. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2318.       Failed writing message. Aborting connection.
  2319. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2320.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2321.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2322.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2323.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2324. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2325.       Failed writing message. Aborting connection.
  2326. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2327.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2328.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2329.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2330.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2331. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2332.       Failed writing message. Aborting connection.
  2333. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2334.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2335.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2336.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2337.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2338. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2339.       Failed writing message. Aborting connection.
  2340. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2341.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2342.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2343.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2344.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2345. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2346.       Failed writing message. Aborting connection.
  2347. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2348.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2349.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2350.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2351.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2352. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2353.       Failed writing message. Aborting connection.
  2354. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2355.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2356.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2357.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2358.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2359. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2360.       Failed writing message. Aborting connection.
  2361. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2362.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2363.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2364.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2365.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2366. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2367.       Failed writing message. Aborting connection.
  2368. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2369.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2370.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2371.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2372.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2373. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2374.       Failed writing message. Aborting connection.
  2375. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2376.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2377.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2378.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2379.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2380. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2381.       Failed writing message. Aborting connection.
  2382. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2383.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2384.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2385.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2386.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2387. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2388.       Failed writing message. Aborting connection.
  2389. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2390.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2391.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2392.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2393.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2394. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2395.       Failed writing message. Aborting connection.
  2396. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2397.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2398.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2399.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2400.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2401. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2402.       Failed writing message. Aborting connection.
  2403. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2404.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2405.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2406.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2407.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2408. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2409.       Failed writing message. Aborting connection.
  2410. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2411.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2412.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2413.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2414.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2415. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2416.       Failed writing message. Aborting connection.
  2417. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2418.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2419.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2420.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2421.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2422. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2423.       Failed writing message. Aborting connection.
  2424. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2425.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2426.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2427.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2428.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2429. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2430.       Failed writing message. Aborting connection.
  2431. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2432.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2433.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2434.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2435.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2436. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2437.       Failed writing message. Aborting connection.
  2438. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2439.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2440.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2441.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2442.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2443. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2444.       Failed writing message. Aborting connection.
  2445. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2446.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2447.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2448.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2449.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2450. [00:11:13] Current: 211032, peak: 211414, connected: 1, disconnected: 17, rate: -16/s
  2451. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2452.       Failed writing message. Aborting connection.
  2453. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2454.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2455.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2456.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2457.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2458. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2459.       Failed writing message. Aborting connection.
  2460. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2461.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2462.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2463.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2464.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2465. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2466.       Failed writing message. Aborting connection.
  2467. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2468.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2469.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2470.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2471.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2472. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2473.       Failed writing message. Aborting connection.
  2474. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2475.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2476.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2477.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2478.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2479. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2480.       Failed writing message. Aborting connection.
  2481. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2482.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2483.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2484.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2485.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2486. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2487.       Failed writing message. Aborting connection.
  2488. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2489.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2490.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2491.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2492.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2493. [00:11:14] Current: 210969, peak: 211414, connected: 0, disconnected: 63, rate: -63/s
  2494. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2495.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:12 +00:00".
  2496. [00:11:15] Current: 210633, peak: 211414, connected: 7, disconnected: 343, rate: -336/s
  2497. [00:11:16] Current: 210618, peak: 211414, connected: 6, disconnected: 21, rate: -15/s
  2498. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2499.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:14 +00:00".
  2500. [00:11:17] Current: 210622, peak: 211414, connected: 16, disconnected: 12, rate: 4/s
  2501. [00:11:18] Current: 210630, peak: 211414, connected: 10, disconnected: 2, rate: 8/s
  2502. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2503.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:16 +00:00".
  2504. [00:11:19] Current: 210662, peak: 211414, connected: 61, disconnected: 29, rate: 32/s
  2505. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2506.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:17 +00:00".
  2507. [00:11:20] Current: 210771, peak: 211414, connected: 152, disconnected: 43, rate: 109/s
  2508. [00:11:21] Current: 210745, peak: 211414, connected: 153, disconnected: 179, rate: -26/s
  2509. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2510.       Failed writing message. Aborting connection.
  2511. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2512.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2513.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2514.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2515.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2516. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2517.       Failed writing message. Aborting connection.
  2518. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2519.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2520.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2521.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2522.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2523. [00:11:22] Current: 210710, peak: 211414, connected: 26, disconnected: 61, rate: -35/s
  2524. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2525.       Failed writing message. Aborting connection.
  2526. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2527.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2528.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2529.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2530.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2531. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2532.       Failed writing message. Aborting connection.
  2533. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2534.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2535.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2536.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2537.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2538. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2539.       Failed writing message. Aborting connection.
  2540. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2541.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2542.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2543.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2544.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2545. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2546.       Failed writing message. Aborting connection.
  2547. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2548.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2549.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2550.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2551.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2552. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2553.       Failed writing message. Aborting connection.
  2554. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2555.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2556.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2557.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2558.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2559. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2560.       Failed writing message. Aborting connection.
  2561. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2562.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2563.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2564.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2565.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2566. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2567.       Failed writing message. Aborting connection.
  2568. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2569.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2570.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2571.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2572.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2573. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2574.       Failed writing message. Aborting connection.
  2575. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2576.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2577.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2578.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2579.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2580. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2581.       Failed writing message. Aborting connection.
  2582. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2583.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2584.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2585.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2586.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2587. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2588.       Failed writing message. Aborting connection.
  2589. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2590.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2591.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2592.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2593.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2594. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2595.       Failed writing message. Aborting connection.
  2596. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2597.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2598.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2599.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2600.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2601. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2602.       Failed writing message. Aborting connection.
  2603. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2604.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2605.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2606.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2607.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2608. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2609.       Failed writing message. Aborting connection.
  2610. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2611.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2612.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2613.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2614.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2615. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2616.       Failed writing message. Aborting connection.
  2617. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2618.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2619.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2620.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2621.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2622. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2623.       Failed writing message. Aborting connection.
  2624. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2625.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2626.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2627.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2628.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2629. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2630.       Failed writing message. Aborting connection.
  2631. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2632.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2633.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2634.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2635.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2636. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2637.       Failed writing message. Aborting connection.
  2638. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2639.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2640.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2641.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2642.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2643. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2644.       Failed writing message. Aborting connection.
  2645. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2646.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2647.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2648.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2649.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2650. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2651.       Failed writing message. Aborting connection.
  2652. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2653.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2654.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2655.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2656.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2657. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2658.       Failed writing message. Aborting connection.
  2659. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2660.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2661.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2662.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2663.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2664. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2665.       Failed writing message. Aborting connection.
  2666. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2667.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2668.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2669.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2670.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2671. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2672.       Failed writing message. Aborting connection.
  2673. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2674.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2675.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2676.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2677.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2678. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2679.       Failed writing message. Aborting connection.
  2680. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2681.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2682.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2683.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2684.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2685. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2686.       Failed writing message. Aborting connection.
  2687. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2688.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2689.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2690.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2691.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2692. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2693.       Failed writing message. Aborting connection.
  2694. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2695.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2696.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2697.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2698.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2699. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2700.       Failed writing message. Aborting connection.
  2701. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2702.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2703.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2704.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2705.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2706. [00:11:23] Current: 210703, peak: 211414, connected: 23, disconnected: 30, rate: -7/s
  2707. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2708.       Failed writing message. Aborting connection.
  2709. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2710.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2711.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2712.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2713.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2714. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2715.       Failed writing message. Aborting connection.
  2716. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2717.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2718.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2719.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2720.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2721. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2722.       Failed writing message. Aborting connection.
  2723. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2724.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2725.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2726.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2727.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2728. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2729.       Failed writing message. Aborting connection.
  2730. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2731.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2732.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2733.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2734.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2735. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2736.       Failed writing message. Aborting connection.
  2737. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2738.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2739.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2740.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2741.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2742. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2743.       Failed writing message. Aborting connection.
  2744. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2745.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2746.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2747.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2748.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2749. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2750.       Failed writing message. Aborting connection.
  2751. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2752.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2753.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2754.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2755.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2756. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2757.       Failed writing message. Aborting connection.
  2758. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2759.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2760.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2761.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2762.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2763. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2764.       Failed writing message. Aborting connection.
  2765. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2766.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2767.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2768.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2769.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2770. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2771.       Failed writing message. Aborting connection.
  2772. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2773.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2774.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2775.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2776.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2777. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2778.       Failed writing message. Aborting connection.
  2779. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2780.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2781.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2782.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2783.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2784. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2785.       Failed writing message. Aborting connection.
  2786. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2787.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2788.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2789.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2790.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2791. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2792.       Failed writing message. Aborting connection.
  2793. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2794.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2795.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2796.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2797.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2798. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2799.       Failed writing message. Aborting connection.
  2800. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2801.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2802.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2803.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2804.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2805. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2806.       Failed writing message. Aborting connection.
  2807. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2808.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2809.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2810.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2811.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2812. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2813.       Failed writing message. Aborting connection.
  2814. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2815.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2816.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2817.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2818.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2819. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2820.       Failed writing message. Aborting connection.
  2821. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2822.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2823.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2824.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2825.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2826. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2827.       Failed writing message. Aborting connection.
  2828. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2829.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2830.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2831.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2832.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2833. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2834.       Failed writing message. Aborting connection.
  2835. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2836.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2837.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2838.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2839.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2840. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2841.       Failed writing message. Aborting connection.
  2842. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2843.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2844.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2845.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2846.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2847. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2848.       Failed writing message. Aborting connection.
  2849. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2850.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2851.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2852.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2853.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2854. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2855.       Failed writing message. Aborting connection.
  2856. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2857.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2858.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2859.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2860.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2861. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2862.       Failed writing message. Aborting connection.
  2863. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2864.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2865.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2866.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2867.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2868. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2869.       Failed writing message. Aborting connection.
  2870. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2871.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2872.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2873.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2874.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2875. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2876.       Failed writing message. Aborting connection.
  2877. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2878.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2879.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2880.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2881.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2882. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2883.       Failed writing message. Aborting connection.
  2884. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2885.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2886.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2887.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2888.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2889. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  2890.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:20 +00:00".
  2891. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2892.       Failed writing message. Aborting connection.
  2893. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2894.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2895.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2896.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2897.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2898. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2899.       Failed writing message. Aborting connection.
  2900. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2901.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2902.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2903.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2904.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2905. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2906.       Failed writing message. Aborting connection.
  2907. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2908.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2909.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2910.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2911.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2912. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2913.       Failed writing message. Aborting connection.
  2914. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2915.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2916.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2917.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2918.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2919. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2920.       Failed writing message. Aborting connection.
  2921. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2922.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2923.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2924.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2925.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2926. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2927.       Failed writing message. Aborting connection.
  2928. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2929.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2930.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2931.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2932.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2933. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2934.       Failed writing message. Aborting connection.
  2935. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2936.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2937.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2938.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2939.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2940. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2941.       Failed writing message. Aborting connection.
  2942. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2943.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2944.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2945.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2946.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2947. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2948.       Failed writing message. Aborting connection.
  2949. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2950.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2951.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2952.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2953.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2954. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2955.       Failed writing message. Aborting connection.
  2956. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2957.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2958.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2959.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2960.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2961. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2962.       Failed writing message. Aborting connection.
  2963. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2964.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2965.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2966.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2967.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2968. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2969.       Failed writing message. Aborting connection.
  2970. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2971.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2972.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2973.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2974.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2975. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2976.       Failed writing message. Aborting connection.
  2977. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2978.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2979.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2980.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2981.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2982. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2983.       Failed writing message. Aborting connection.
  2984. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2985.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2986.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2987.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2988.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2989. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2990.       Failed writing message. Aborting connection.
  2991. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2992.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  2993.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2994.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  2995.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  2996. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  2997.       Failed writing message. Aborting connection.
  2998. System.InvalidOperationException: Writing is not allowed after writer was completed.
  2999.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3000.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3001.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3002.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3003. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3004.       Failed writing message. Aborting connection.
  3005. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3006.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3007.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3008.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3009.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3010. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3011.       Failed writing message. Aborting connection.
  3012. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3013.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3014.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3015.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3016.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3017. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3018.       Failed writing message. Aborting connection.
  3019. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3020.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3021.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3022.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3023.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3024. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3025.       Failed writing message. Aborting connection.
  3026. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3027.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3028.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3029.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3030.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3031. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3032.       Failed writing message. Aborting connection.
  3033. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3034.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3035.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3036.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3037.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3038. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3039.       Failed writing message. Aborting connection.
  3040. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3041.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3042.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3043.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3044.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3045. [00:11:24] Current: 210689, peak: 211414, connected: 22, disconnected: 36, rate: -14/s
  3046. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3047.       Failed writing message. Aborting connection.
  3048. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3049.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3050.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3051.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3052.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3053. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3054.       Failed writing message. Aborting connection.
  3055. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3056.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3057.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3058.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3059.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3060. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3061.       Failed writing message. Aborting connection.
  3062. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3063.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3064.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3065.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3066.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3067. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3068.       Failed writing message. Aborting connection.
  3069. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3070.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3071.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3072.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3073.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3074. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3075.       Failed writing message. Aborting connection.
  3076. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3077.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3078.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3079.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3080.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3081. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3082.       Failed writing message. Aborting connection.
  3083. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3084.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3085.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3086.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3087.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3088. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3089.       Failed writing message. Aborting connection.
  3090. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3091.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3092.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3093.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3094.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3095. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3096.       Failed writing message. Aborting connection.
  3097. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3098.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3099.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3100.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3101.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3102. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3103.       Failed writing message. Aborting connection.
  3104. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3105.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3106.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3107.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3108.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3109. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3110.       Failed writing message. Aborting connection.
  3111. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3112.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3113.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3114.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3115.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3116. [00:11:25] Current: 210652, peak: 211414, connected: 13, disconnected: 50, rate: -37/s
  3117. [00:11:26] Current: 210613, peak: 211414, connected: 17, disconnected: 56, rate: -39/s
  3118. [00:11:28] Current: 210610, peak: 211414, connected: 0, disconnected: 3, rate: -3/s
  3119. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3120.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:25 +00:00".
  3121. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3122.       Failed writing message. Aborting connection.
  3123. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3124.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3125.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3126.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3127.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3128. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3129.       Failed writing message. Aborting connection.
  3130. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3131.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3132.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3133.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3134.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3135. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3136.       Failed writing message. Aborting connection.
  3137. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3138.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3139.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3140.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3141.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3142. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3143.       Failed writing message. Aborting connection.
  3144. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3145.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3146.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3147.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3148.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3149. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3150.       Failed writing message. Aborting connection.
  3151. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3152.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3153.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3154.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3155.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3156. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3157.       Failed writing message. Aborting connection.
  3158. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3159.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3160.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3161.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3162.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3163. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3164.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:25 +00:00".
  3165. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3166.       Failed writing message. Aborting connection.
  3167. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3168.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3169.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3170.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3171.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3172. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3173.       Failed writing message. Aborting connection.
  3174. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3175.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3176.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3177.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3178.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3179. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3180.       Failed writing message. Aborting connection.
  3181. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3182.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3183.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3184.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3185.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3186. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3187.       Failed writing message. Aborting connection.
  3188. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3189.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3190.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3191.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3192.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3193. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3194.       Failed writing message. Aborting connection.
  3195. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3196.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3197.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3198.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3199.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3200. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3201.       Failed writing message. Aborting connection.
  3202. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3203.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3204.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3205.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3206.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3207. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3208.       Failed writing message. Aborting connection.
  3209. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3210.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3211.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3212.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3213.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3214. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3215.       Failed writing message. Aborting connection.
  3216. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3217.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3218.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3219.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3220.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3221. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3222.       Failed writing message. Aborting connection.
  3223. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3224.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3225.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3226.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3227.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3228. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3229.       Failed writing message. Aborting connection.
  3230. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3231.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3232.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3233.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3234.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3235. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3236.       Failed writing message. Aborting connection.
  3237. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3238.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3239.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3240.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3241.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3242. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3243.       Failed writing message. Aborting connection.
  3244. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3245.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3246.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3247.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3248.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3249. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3250.       Failed writing message. Aborting connection.
  3251. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3252.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3253.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3254.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3255.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3256. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3257.       Failed writing message. Aborting connection.
  3258. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3259.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3260.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3261.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3262.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3263. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3264.       Failed writing message. Aborting connection.
  3265. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3266.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3267.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3268.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3269.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3270. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3271.       Failed writing message. Aborting connection.
  3272. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3273.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3274.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3275.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3276.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3277. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3278.       Failed writing message. Aborting connection.
  3279. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3280.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3281.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3282.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3283.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3284. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3285.       Failed writing message. Aborting connection.
  3286. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3287.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3288.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3289.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3290.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3291. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3292.       Failed writing message. Aborting connection.
  3293. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3294.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3295.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3296.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3297.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3298. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3299.       Failed writing message. Aborting connection.
  3300. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3301.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3302.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3303.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3304.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3305. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3306.       Failed writing message. Aborting connection.
  3307. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3308.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3309.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3310.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3311.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3312. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3313.       Failed writing message. Aborting connection.
  3314. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3315.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3316.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3317.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3318.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3319. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3320.       Failed writing message. Aborting connection.
  3321. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3322.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3323.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3324.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3325.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3326. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3327.       Failed writing message. Aborting connection.
  3328. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3329.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3330.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3331.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3332.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3333. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3334.       Failed writing message. Aborting connection.
  3335. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3336.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3337.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3338.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3339.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3340. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3341.       Failed writing message. Aborting connection.
  3342. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3343.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3344.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3345.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3346.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3347. [00:11:29] Current: 210313, peak: 211414, connected: 0, disconnected: 297, rate: -297/s
  3348. [00:11:30] Current: 210169, peak: 211414, connected: 2, disconnected: 146, rate: -144/s
  3349. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3350.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:28 +00:00".
  3351. [00:11:31] Current: 210112, peak: 211414, connected: 13, disconnected: 70, rate: -57/s
  3352. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3353.       Failed writing message. Aborting connection.
  3354. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3355.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3356.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3357.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3358.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3359. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3360.       Failed writing message. Aborting connection.
  3361. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3362.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3363.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3364.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3365.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3366. [00:11:32] Current: 210004, peak: 211414, connected: 4, disconnected: 112, rate: -108/s
  3367. [00:11:33] Current: 209408, peak: 211414, connected: 23, disconnected: 619, rate: -596/s
  3368. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3369.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:31 +00:00".
  3370. [00:11:34] Current: 208286, peak: 211414, connected: 87, disconnected: 1209, rate: -1122/s
  3371. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3372.       Failed writing message. Aborting connection.
  3373. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3374.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3375.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3376.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3377.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3378. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3379.       Failed writing message. Aborting connection.
  3380. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3381.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3382.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3383.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3384.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3385. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3386.       Failed writing message. Aborting connection.
  3387. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3388.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3389.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3390.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3391.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3392. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3393.       Failed writing message. Aborting connection.
  3394. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3395.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3396.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3397.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3398.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3399. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3400.       Failed writing message. Aborting connection.
  3401. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3402.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3403.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3404.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3405.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3406. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3407.       Failed writing message. Aborting connection.
  3408. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3409.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3410.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3411.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3412.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3413. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3414.       Failed writing message. Aborting connection.
  3415. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3416.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3417.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3418.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3419.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3420. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3421.       Failed writing message. Aborting connection.
  3422. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3423.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3424.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3425.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3426.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3427. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3428.       Failed writing message. Aborting connection.
  3429. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3430.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3431.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3432.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3433.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3434. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3435.       Failed writing message. Aborting connection.
  3436. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3437.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3438.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3439.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3440.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3441. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3442.       Failed writing message. Aborting connection.
  3443. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3444.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3445.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3446.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3447.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3448. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3449.       Failed writing message. Aborting connection.
  3450. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3451.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3452.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3453.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3454.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3455. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3456.       Failed writing message. Aborting connection.
  3457. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3458.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3459.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3460.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3461.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3462. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3463.       Failed writing message. Aborting connection.
  3464. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3465.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3466.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3467.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3468.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3469. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3470.       Failed writing message. Aborting connection.
  3471. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3472.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3473.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3474.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3475.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3476. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3477.       Failed writing message. Aborting connection.
  3478. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3479.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3480.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3481.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3482.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3483. [00:11:35] Current: 207991, peak: 211414, connected: 42, disconnected: 337, rate: -295/s
  3484. [00:11:36] Current: 208176, peak: 211414, connected: 231, disconnected: 46, rate: 185/s
  3485. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3486.       Failed writing message. Aborting connection.
  3487. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3488.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3489.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3490.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3491.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3492. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3493.       Failed writing message. Aborting connection.
  3494. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3495.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3496.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3497.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3498.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3499. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3500.       Failed writing message. Aborting connection.
  3501. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3502.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3503.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3504.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3505.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3506. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3507.       Failed writing message. Aborting connection.
  3508. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3509.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3510.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3511.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3512.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3513. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3514.       Failed writing message. Aborting connection.
  3515. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3516.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3517.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3518.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3519.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3520. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3521.       Failed writing message. Aborting connection.
  3522. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3523.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3524.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3525.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3526.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3527. [00:11:37] Current: 208359, peak: 211414, connected: 225, disconnected: 42, rate: 183/s
  3528. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3529.       Failed writing message. Aborting connection.
  3530. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3531.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3532.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3533.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3534.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3535. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3536.       Failed writing message. Aborting connection.
  3537. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3538.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3539.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3540.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3541.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3542. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3543.       Failed writing message. Aborting connection.
  3544. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3545.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3546.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3547.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3548.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3549. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3550.       Failed writing message. Aborting connection.
  3551. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3552.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3553.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3554.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3555.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3556. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3557.       Failed writing message. Aborting connection.
  3558. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3559.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3560.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3561.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3562.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3563. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3564.       Failed writing message. Aborting connection.
  3565. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3566.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3567.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3568.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3569.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3570. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3571.       Failed writing message. Aborting connection.
  3572. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3573.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3574.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3575.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3576.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3577. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3578.       Failed writing message. Aborting connection.
  3579. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3580.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3581.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3582.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3583.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3584. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3585.       Failed writing message. Aborting connection.
  3586. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3587.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3588.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3589.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3590.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3591. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3592.       Failed writing message. Aborting connection.
  3593. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3594.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3595.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3596.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3597.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3598. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3599.       Failed writing message. Aborting connection.
  3600. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3601.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3602.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3603.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3604.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3605. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3606.       Failed writing message. Aborting connection.
  3607. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3608.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3609.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3610.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3611.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3612. [00:11:38] Current: 208381, peak: 211414, connected: 37, disconnected: 15, rate: 22/s
  3613. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3614.       Failed writing message. Aborting connection.
  3615. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3616.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3617.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3618.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3619.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3620. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3621.       Failed writing message. Aborting connection.
  3622. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3623.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3624.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3625.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3626.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3627. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3628.       Failed writing message. Aborting connection.
  3629. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3630.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3631.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3632.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3633.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3634. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3635.       Failed writing message. Aborting connection.
  3636. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3637.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3638.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3639.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3640.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3641. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3642.       Failed writing message. Aborting connection.
  3643. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3644.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3645.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3646.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3647.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3648. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3649.       Failed writing message. Aborting connection.
  3650. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3651.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3652.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3653.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3654.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3655. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3656.       Failed writing message. Aborting connection.
  3657. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3658.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3659.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3660.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3661.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3662. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3663.       Failed writing message. Aborting connection.
  3664. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3665.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3666.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3667.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3668.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3669. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3670.       Failed writing message. Aborting connection.
  3671. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3672.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3673.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3674.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3675.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3676. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3677.       Failed writing message. Aborting connection.
  3678. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3679.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3680.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3681.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3682.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3683. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3684.       Failed writing message. Aborting connection.
  3685. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3686.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3687.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3688.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3689.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3690. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3691.       Failed writing message. Aborting connection.
  3692. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3693.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3694.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3695.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3696.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3697. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3698.       Failed writing message. Aborting connection.
  3699. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3700.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3701.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3702.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3703.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3704. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3705.       Failed writing message. Aborting connection.
  3706. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3707.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3708.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3709.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3710.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3711. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3712.       Failed writing message. Aborting connection.
  3713. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3714.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3715.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3716.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3717.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3718. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3719.       Failed writing message. Aborting connection.
  3720. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3721.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3722.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3723.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3724.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3725. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3726.       Failed writing message. Aborting connection.
  3727. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3728.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3729.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3730.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3731.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3732. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3733.       Failed writing message. Aborting connection.
  3734. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3735.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3736.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3737.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3738.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3739. [00:11:39] Current: 208337, peak: 211414, connected: 11, disconnected: 55, rate: -44/s
  3740. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3741.       Failed writing message. Aborting connection.
  3742. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3743.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3744.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3745.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3746.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3747. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3748.       Failed writing message. Aborting connection.
  3749. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3750.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3751.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3752.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3753.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3754. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3755.       Failed writing message. Aborting connection.
  3756. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3757.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3758.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3759.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3760.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3761. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3762.       Failed writing message. Aborting connection.
  3763. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3764.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3765.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3766.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3767.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3768. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3769.       Failed writing message. Aborting connection.
  3770. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3771.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3772.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3773.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3774.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3775. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3776.       Failed writing message. Aborting connection.
  3777. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3778.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3779.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3780.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3781.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3782. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3783.       Failed writing message. Aborting connection.
  3784. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3785.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3786.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3787.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3788.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3789. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3790.       Failed writing message. Aborting connection.
  3791. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3792.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3793.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3794.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3795.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3796. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3797.       Failed writing message. Aborting connection.
  3798. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3799.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3800.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3801.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3802.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3803. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3804.       Failed writing message. Aborting connection.
  3805. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3806.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3807.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3808.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3809.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3810. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3811.       Failed writing message. Aborting connection.
  3812. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3813.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3814.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3815.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3816.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3817. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3818.       Failed writing message. Aborting connection.
  3819. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3820.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3821.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3822.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3823.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3824. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3825.       Failed writing message. Aborting connection.
  3826. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3827.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3828.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3829.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3830.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3831. [00:11:40] Current: 208318, peak: 211414, connected: 9, disconnected: 28, rate: -19/s
  3832. [00:11:41] Current: 208304, peak: 211414, connected: 15, disconnected: 29, rate: -14/s
  3833. [00:11:42] Current: 208320, peak: 211414, connected: 53, disconnected: 37, rate: 16/s
  3834. [00:11:43] Current: 208579, peak: 211414, connected: 283, disconnected: 24, rate: 259/s
  3835. [00:11:44] Current: 208753, peak: 211414, connected: 187, disconnected: 13, rate: 174/s
  3836. [00:11:46] Current: 208768, peak: 211414, connected: 15, disconnected: 0, rate: 15/s
  3837. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3838.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:43 +00:00".
  3839. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3840.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:43 +00:00".
  3841. [00:11:47] Current: 208750, peak: 211414, connected: 23, disconnected: 41, rate: -18/s
  3842. [00:11:48] Current: 208622, peak: 211414, connected: 30, disconnected: 158, rate: -128/s
  3843. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3844.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:45 +00:00".
  3845. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3846.       Failed writing message. Aborting connection.
  3847. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3848.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3849.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3850.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3851.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3852. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3853.       Failed writing message. Aborting connection.
  3854. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3855.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3856.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3857.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3858.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3859. [00:11:49] Current: 208730, peak: 211414, connected: 111, disconnected: 3, rate: 108/s
  3860. [00:11:50] Current: 209021, peak: 211414, connected: 297, disconnected: 6, rate: 291/s
  3861. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  3862.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:47 +00:00".
  3863. [00:11:51] Current: 209360, peak: 211414, connected: 365, disconnected: 26, rate: 339/s
  3864. [00:11:52] Current: 209527, peak: 211414, connected: 394, disconnected: 227, rate: 167/s
  3865. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3866.       Failed writing message. Aborting connection.
  3867. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3868.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3869.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3870.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3871.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3872. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3873.       Failed writing message. Aborting connection.
  3874. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3875.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3876.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3877.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3878.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3879. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3880.       Failed writing message. Aborting connection.
  3881. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3882.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3883.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3884.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3885.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3886. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3887.       Failed writing message. Aborting connection.
  3888. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3889.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3890.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3891.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3892.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3893. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3894.       Failed writing message. Aborting connection.
  3895. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3896.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3897.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3898.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3899.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3900. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3901.       Failed writing message. Aborting connection.
  3902. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3903.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3904.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3905.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3906.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3907. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3908.       Failed writing message. Aborting connection.
  3909. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3910.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3911.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3912.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3913.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3914. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3915.       Failed writing message. Aborting connection.
  3916. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3917.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3918.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3919.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3920.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3921. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3922.       Failed writing message. Aborting connection.
  3923. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3924.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3925.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3926.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3927.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3928. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3929.       Failed writing message. Aborting connection.
  3930. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3931.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3932.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3933.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3934.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3935. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3936.       Failed writing message. Aborting connection.
  3937. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3938.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3939.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3940.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3941.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3942. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3943.       Failed writing message. Aborting connection.
  3944. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3945.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3946.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3947.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3948.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3949. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3950.       Failed writing message. Aborting connection.
  3951. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3952.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3953.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3954.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3955.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3956. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3957.       Failed writing message. Aborting connection.
  3958. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3959.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3960.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3961.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3962.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3963. [00:11:53] Current: 209715, peak: 211414, connected: 272, disconnected: 84, rate: 188/s
  3964. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3965.       Failed writing message. Aborting connection.
  3966. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3967.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3968.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3969.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3970.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3971. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3972.       Failed writing message. Aborting connection.
  3973. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3974.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3975.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3976.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3977.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3978. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3979.       Failed writing message. Aborting connection.
  3980. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3981.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3982.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3983.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3984.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3985. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3986.       Failed writing message. Aborting connection.
  3987. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3988.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3989.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3990.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3991.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3992. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  3993.       Failed writing message. Aborting connection.
  3994. System.InvalidOperationException: Writing is not allowed after writer was completed.
  3995.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  3996.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3997.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  3998.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  3999. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4000.       Failed writing message. Aborting connection.
  4001. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4002.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4003.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4004.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4005.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4006. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4007.       Failed writing message. Aborting connection.
  4008. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4009.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4010.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4011.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4012.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4013. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4014.       Failed writing message. Aborting connection.
  4015. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4016.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4017.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4018.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4019.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4020. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4021.       Failed writing message. Aborting connection.
  4022. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4023.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4024.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4025.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4026.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4027. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4028.       Failed writing message. Aborting connection.
  4029. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4030.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4031.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4032.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4033.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4034. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4035.       Failed writing message. Aborting connection.
  4036. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4037.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4038.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4039.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4040.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4041. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4042.       Failed writing message. Aborting connection.
  4043. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4044.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4045.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4046.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4047.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4048. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4049.       Failed writing message. Aborting connection.
  4050. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4051.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4052.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4053.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4054.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4055. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4056.       Failed writing message. Aborting connection.
  4057. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4058.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4059.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4060.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4061.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4062. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4063.       Failed writing message. Aborting connection.
  4064. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4065.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4066.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4067.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4068.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4069. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4070.       Failed writing message. Aborting connection.
  4071. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4072.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4073.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4074.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4075.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4076. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4077.       Failed writing message. Aborting connection.
  4078. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4079.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4080.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4081.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4082.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4083. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4084.       Failed writing message. Aborting connection.
  4085. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4086.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4087.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4088.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4089.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4090. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4091.       Failed writing message. Aborting connection.
  4092. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4093.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4094.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4095.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4096.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4097. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4098.       Failed writing message. Aborting connection.
  4099. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4100.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4101.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4102.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4103.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4104. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4105.       Failed writing message. Aborting connection.
  4106. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4107.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4108.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4109.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4110.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4111. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4112.       Failed writing message. Aborting connection.
  4113. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4114.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4115.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4116.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4117.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4118. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4119.       Failed writing message. Aborting connection.
  4120. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4121.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4122.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4123.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4124.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4125. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4126.       Failed writing message. Aborting connection.
  4127. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4128.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4129.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4130.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4131.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4132. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4133.       Failed writing message. Aborting connection.
  4134. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4135.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4136.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4137.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4138.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4139. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4140.       Failed writing message. Aborting connection.
  4141. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4142.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4143.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4144.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4145.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4146. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4147.       Failed writing message. Aborting connection.
  4148. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4149.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4150.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4151.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4152.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4153. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4154.       Failed writing message. Aborting connection.
  4155. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4156.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4157.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4158.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4159.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4160. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4161.       Failed writing message. Aborting connection.
  4162. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4163.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4164.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4165.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4166.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4167. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4168.       Failed writing message. Aborting connection.
  4169. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4170.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4171.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4172.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4173.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4174. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4175.       Failed writing message. Aborting connection.
  4176. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4177.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4178.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4179.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4180.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4181. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4182.       Failed writing message. Aborting connection.
  4183. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4184.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4185.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4186.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4187.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4188. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4189.       Failed writing message. Aborting connection.
  4190. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4191.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4192.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4193.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4194.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4195. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4196.       Failed writing message. Aborting connection.
  4197. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4198.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4199.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4200.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4201.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4202. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4203.       Failed writing message. Aborting connection.
  4204. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4205.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4206.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4207.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4208.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4209. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4210.       Failed writing message. Aborting connection.
  4211. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4212.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4213.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4214.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4215.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4216. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4217.       Failed writing message. Aborting connection.
  4218. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4219.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4220.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4221.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4222.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4223. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4224.       Failed writing message. Aborting connection.
  4225. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4226.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4227.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4228.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4229.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4230. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4231.       Failed writing message. Aborting connection.
  4232. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4233.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4234.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4235.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4236.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4237. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4238.       Failed writing message. Aborting connection.
  4239. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4240.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4241.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4242.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4243.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4244. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4245.       Failed writing message. Aborting connection.
  4246. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4247.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4248.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4249.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4250.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4251. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4252.       Failed writing message. Aborting connection.
  4253. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4254.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4255.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4256.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4257.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4258. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4259.       Failed writing message. Aborting connection.
  4260. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4261.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4262.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4263.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4264.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4265. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4266.       Failed writing message. Aborting connection.
  4267. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4268.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4269.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4270.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4271.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4272. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4273.       Failed writing message. Aborting connection.
  4274. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4275.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4276.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4277.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4278.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4279. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4280.       Failed writing message. Aborting connection.
  4281. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4282.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4283.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4284.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4285.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4286. [00:11:54] Current: 209715, peak: 211414, connected: 29, disconnected: 29, rate: 0/s
  4287. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4288.       Failed writing message. Aborting connection.
  4289. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4290.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4291.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4292.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4293.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4294. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4295.       Failed writing message. Aborting connection.
  4296. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4297.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4298.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4299.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4300.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4301. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4302.       Failed writing message. Aborting connection.
  4303. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4304.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4305.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4306.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4307.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4308. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4309.       Failed writing message. Aborting connection.
  4310. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4311.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4312.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4313.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4314.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4315. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4316.       Failed writing message. Aborting connection.
  4317. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4318.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4319.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4320.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4321.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4322. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4323.       Failed writing message. Aborting connection.
  4324. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4325.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4326.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4327.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4328.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4329. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4330.       Failed writing message. Aborting connection.
  4331. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4332.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4333.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4334.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4335.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4336. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4337.       Failed writing message. Aborting connection.
  4338. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4339.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4340.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4341.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4342.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4343. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4344.       Failed writing message. Aborting connection.
  4345. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4346.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4347.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4348.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4349.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4350. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4351.       Failed writing message. Aborting connection.
  4352. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4353.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4354.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4355.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4356.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4357. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4358.       Failed writing message. Aborting connection.
  4359. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4360.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4361.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4362.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4363.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4364. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4365.       Failed writing message. Aborting connection.
  4366. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4367.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4368.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4369.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4370.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4371. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4372.       Failed writing message. Aborting connection.
  4373. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4374.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4375.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4376.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4377.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4378. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4379.       Failed writing message. Aborting connection.
  4380. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4381.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4382.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4383.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4384.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4385. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4386.       Failed writing message. Aborting connection.
  4387. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4388.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4389.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4390.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4391.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4392. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4393.       Failed writing message. Aborting connection.
  4394. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4395.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4396.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4397.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4398.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4399. [00:11:55] Current: 209595, peak: 211414, connected: 6, disconnected: 126, rate: -120/s
  4400. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4401.       Failed writing message. Aborting connection.
  4402. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4403.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4404.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4405.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4406.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4407. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4408.       Failed writing message. Aborting connection.
  4409. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4410.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4411.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4412.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4413.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4414. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4415.       Failed writing message. Aborting connection.
  4416. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4417.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4418.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4419.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4420.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4421. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4422.       Failed writing message. Aborting connection.
  4423. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4424.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4425.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4426.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4427.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4428. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4429.       Failed writing message. Aborting connection.
  4430. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4431.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4432.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4433.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4434.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4435. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4436.       Failed writing message. Aborting connection.
  4437. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4438.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4439.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4440.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4441.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4442. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4443.       Failed writing message. Aborting connection.
  4444. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4445.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4446.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4447.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4448.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4449. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4450.       Failed writing message. Aborting connection.
  4451. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4452.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4453.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4454.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4455.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4456. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4457.       Failed writing message. Aborting connection.
  4458. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4459.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4460.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4461.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4462.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4463. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4464.       Failed writing message. Aborting connection.
  4465. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4466.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4467.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4468.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4469.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4470. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4471.       Failed writing message. Aborting connection.
  4472. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4473.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4474.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4475.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4476.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4477. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4478.       Failed writing message. Aborting connection.
  4479. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4480.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4481.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4482.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4483.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4484. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4485.       Failed writing message. Aborting connection.
  4486. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4487.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4488.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4489.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4490.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4491. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4492.       Failed writing message. Aborting connection.
  4493. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4494.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4495.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4496.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4497.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4498. [00:11:56] Current: 209542, peak: 211414, connected: 5, disconnected: 58, rate: -53/s
  4499. [00:11:57] Current: 209557, peak: 211414, connected: 17, disconnected: 2, rate: 15/s
  4500. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4501.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:54 +00:00".
  4502. [00:11:58] Current: 209612, peak: 211414, connected: 57, disconnected: 2, rate: 55/s
  4503. [00:11:59] Current: 209628, peak: 211414, connected: 26, disconnected: 10, rate: 16/s
  4504. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4505.       Failed writing message. Aborting connection.
  4506. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4507.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4508.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4509.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4510.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4511. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4512.       Failed writing message. Aborting connection.
  4513. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4514.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4515.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4516.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4517.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4518. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4519.       Failed writing message. Aborting connection.
  4520. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4521.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4522.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4523.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4524.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4525. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4526.       Failed writing message. Aborting connection.
  4527. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4528.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4529.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4530.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4531.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4532. [00:12:00] Current: 209639, peak: 211414, connected: 39, disconnected: 28, rate: 11/s
  4533. [00:12:01] Current: 209689, peak: 211414, connected: 54, disconnected: 4, rate: 50/s
  4534. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4535.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:07:58 +00:00".
  4536. [00:12:02] Current: 209806, peak: 211414, connected: 118, disconnected: 1, rate: 117/s
  4537. [00:12:03] Current: 209860, peak: 211414, connected: 54, disconnected: 0, rate: 54/s
  4538. [00:12:04] Current: 209880, peak: 211414, connected: 31, disconnected: 11, rate: 20/s
  4539. [00:12:06] Current: 209939, peak: 211414, connected: 71, disconnected: 12, rate: 59/s
  4540. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4541.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:02 +00:00".
  4542. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4543.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:03 +00:00".
  4544. [00:12:07] Current: 209964, peak: 211414, connected: 44, disconnected: 19, rate: 25/s
  4545. [00:12:08] Current: 210218, peak: 211414, connected: 255, disconnected: 1, rate: 254/s
  4546. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4547.       Failed writing message. Aborting connection.
  4548. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4549.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4550.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4551.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4552.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4553. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4554.       Failed writing message. Aborting connection.
  4555. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4556.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4557.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4558.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4559.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4560. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4561.       Failed writing message. Aborting connection.
  4562. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4563.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4564.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4565.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4566.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4567. [00:12:09] Current: 210308, peak: 211414, connected: 92, disconnected: 2, rate: 90/s
  4568. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4569.       Failed writing message. Aborting connection.
  4570. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4571.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4572.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4573.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4574.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4575. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4576.       Failed writing message. Aborting connection.
  4577. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4578.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4579.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4580.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4581.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4582. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4583.       Failed writing message. Aborting connection.
  4584. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4585.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4586.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4587.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4588.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4589. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4590.       Failed writing message. Aborting connection.
  4591. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4592.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4593.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4594.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4595.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4596. [00:12:10] Current: 210305, peak: 211414, connected: 5, disconnected: 8, rate: -3/s
  4597. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4598.       Failed writing message. Aborting connection.
  4599. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4600.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4601.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4602.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4603.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4604. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4605.       Failed writing message. Aborting connection.
  4606. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4607.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4608.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4609.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4610.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4611. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4612.       Failed writing message. Aborting connection.
  4613. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4614.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4615.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4616.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4617.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4618. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4619.       Failed writing message. Aborting connection.
  4620. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4621.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4622.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4623.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4624.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4625. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4626.       Failed writing message. Aborting connection.
  4627. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4628.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4629.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4630.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4631.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4632. [00:12:11] Current: 210305, peak: 211414, connected: 3, disconnected: 3, rate: 0/s
  4633. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4634.       Failed writing message. Aborting connection.
  4635. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4636.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4637.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4638.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4639.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4640. [00:12:12] Current: 210296, peak: 211414, connected: 4, disconnected: 13, rate: -9/s
  4641. [00:12:13] Current: 210288, peak: 211414, connected: 12, disconnected: 20, rate: -8/s
  4642. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4643.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:10 +00:00".
  4644. [00:12:14] Current: 210310, peak: 211414, connected: 28, disconnected: 6, rate: 22/s
  4645. [00:12:15] Current: 210408, peak: 211414, connected: 107, disconnected: 9, rate: 98/s
  4646. [00:12:16] Current: 210467, peak: 211414, connected: 61, disconnected: 2, rate: 59/s
  4647. [00:12:17] Current: 210689, peak: 211414, connected: 262, disconnected: 40, rate: 222/s
  4648. [00:12:18] Current: 210950, peak: 211414, connected: 356, disconnected: 95, rate: 261/s
  4649. [00:12:19] Current: 211012, peak: 211414, connected: 62, disconnected: 0, rate: 62/s
  4650. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4651.       Failed writing message. Aborting connection.
  4652. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4653.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4654.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4655.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4656.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4657. [00:12:20] Current: 211065, peak: 211414, connected: 60, disconnected: 7, rate: 53/s
  4658. [00:12:21] Current: 211085, peak: 211414, connected: 30, disconnected: 10, rate: 20/s
  4659. [00:12:22] Current: 211176, peak: 211414, connected: 153, disconnected: 62, rate: 91/s
  4660. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4661.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:19 +00:00".
  4662. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4663.       Failed writing message. Aborting connection.
  4664. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4665.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4666.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4667.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4668.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4669. [00:12:23] Current: 211455, peak: 211455, connected: 326, disconnected: 47, rate: 279/s
  4670. [00:12:24] Current: 211753, peak: 211753, connected: 301, disconnected: 3, rate: 298/s
  4671. [00:12:25] Current: 211825, peak: 211825, connected: 74, disconnected: 2, rate: 72/s
  4672. [00:12:27] Current: 211826, peak: 211826, connected: 1, disconnected: 0, rate: 1/s
  4673. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4674.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:23 +00:00".
  4675. [00:12:28] Current: 211839, peak: 211839, connected: 23, disconnected: 10, rate: 13/s
  4676. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4677.       Failed writing message. Aborting connection.
  4678. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4679.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4680.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4681.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4682.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4683. [00:12:29] Current: 211835, peak: 211839, connected: 13, disconnected: 17, rate: -4/s
  4684. [00:12:30] Current: 211843, peak: 211843, connected: 19, disconnected: 11, rate: 8/s
  4685. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4686.       Failed writing message. Aborting connection.
  4687. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4688.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4689.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4690.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4691.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4692. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4693.       Failed writing message. Aborting connection.
  4694. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4695.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4696.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4697.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4698.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4699. [00:12:31] Current: 211838, peak: 211843, connected: 13, disconnected: 18, rate: -5/s
  4700. [00:12:32] Current: 211798, peak: 211843, connected: 42, disconnected: 82, rate: -40/s
  4701. [00:12:33] Current: 211856, peak: 211856, connected: 74, disconnected: 16, rate: 58/s
  4702. [00:12:34] Current: 211903, peak: 211903, connected: 47, disconnected: 0, rate: 47/s
  4703. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4704.       Failed writing message. Aborting connection.
  4705. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4706.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4707.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4708.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4709.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4710. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4711.       Failed writing message. Aborting connection.
  4712. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4713.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4714.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4715.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4716.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4717. [00:12:35] Current: 211923, peak: 211932, connected: 40, disconnected: 20, rate: 20/s
  4718. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4719.       Failed writing message. Aborting connection.
  4720. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4721.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4722.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4723.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4724.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4725. [00:12:36] Current: 212011, peak: 212011, connected: 100, disconnected: 12, rate: 88/s
  4726. [00:12:37] Current: 212314, peak: 212314, connected: 303, disconnected: 0, rate: 303/s
  4727. [00:12:38] Current: 212678, peak: 212678, connected: 387, disconnected: 23, rate: 364/s
  4728. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4729.       Failed writing message. Aborting connection.
  4730. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4731.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4732.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4733.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4734.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4735. [00:12:39] Current: 213029, peak: 213029, connected: 351, disconnected: 0, rate: 351/s
  4736. [00:12:40] Current: 213153, peak: 213153, connected: 125, disconnected: 1, rate: 124/s
  4737. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4738.       Failed writing message. Aborting connection.
  4739. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4740.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4741.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4742.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4743.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4744. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4745.       Failed writing message. Aborting connection.
  4746. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4747.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4748.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4749.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4750.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4751. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4752.       Failed writing message. Aborting connection.
  4753. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4754.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4755.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4756.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4757.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4758. [00:12:41] Current: 213245, peak: 213245, connected: 100, disconnected: 8, rate: 92/s
  4759. [00:12:42] Current: 213503, peak: 213503, connected: 260, disconnected: 2, rate: 258/s
  4760. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4761.       Failed writing message. Aborting connection.
  4762. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4763.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4764.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4765.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4766.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4767. [00:12:43] Current: 213775, peak: 213775, connected: 272, disconnected: 0, rate: 272/s
  4768. [00:12:45] Current: 213828, peak: 213828, connected: 53, disconnected: 0, rate: 53/s
  4769. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4770.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:41 +00:00".
  4771. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4772.       Failed writing message. Aborting connection.
  4773. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4774.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4775.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4776.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4777.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4778. [00:12:46] Current: 213860, peak: 213860, connected: 35, disconnected: 3, rate: 32/s
  4779. [00:12:47] Current: 213886, peak: 213886, connected: 27, disconnected: 1, rate: 26/s
  4780. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4781.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:44 +00:00".
  4782. [00:12:48] Current: 213921, peak: 213921, connected: 36, disconnected: 1, rate: 35/s
  4783. [00:12:49] Current: 213923, peak: 213924, connected: 5, disconnected: 3, rate: 2/s
  4784. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4785.       Failed writing message. Aborting connection.
  4786. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4787.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4788.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4789.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4790.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4791. [00:12:50] Current: 213924, peak: 213924, connected: 1, disconnected: 0, rate: 1/s
  4792. [00:12:51] Current: 213927, peak: 213927, connected: 3, disconnected: 0, rate: 3/s
  4793. [00:12:52] Current: 213932, peak: 213932, connected: 6, disconnected: 1, rate: 5/s
  4794. [00:12:53] Current: 213939, peak: 213939, connected: 7, disconnected: 0, rate: 7/s
  4795. [00:12:54] Current: 213945, peak: 213945, connected: 8, disconnected: 2, rate: 6/s
  4796. [00:12:55] Current: 213952, peak: 213952, connected: 7, disconnected: 0, rate: 7/s
  4797. [00:12:56] Current: 213959, peak: 213959, connected: 7, disconnected: 0, rate: 7/s
  4798. [00:12:57] Current: 213961, peak: 213961, connected: 2, disconnected: 0, rate: 2/s
  4799. [00:12:58] Current: 213963, peak: 213963, connected: 2, disconnected: 0, rate: 2/s
  4800. [00:12:59] Current: 213993, peak: 213993, connected: 30, disconnected: 0, rate: 30/s
  4801. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4802.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:55 +00:00".
  4803. [00:13:00] Current: 214009, peak: 214009, connected: 16, disconnected: 0, rate: 16/s
  4804. [00:13:01] Current: 214018, peak: 214018, connected: 9, disconnected: 0, rate: 9/s
  4805. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4806.       Failed writing message. Aborting connection.
  4807. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4808.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4809.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4810.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4811.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4812. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4813.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:08:58 +00:00".
  4814. [00:13:02] Current: 214022, peak: 214023, connected: 8, disconnected: 4, rate: 4/s
  4815. [00:13:03] Current: 214019, peak: 214025, connected: 15, disconnected: 18, rate: -3/s
  4816. [00:13:04] Current: 214014, peak: 214025, connected: 6, disconnected: 11, rate: -5/s
  4817. [00:13:06] Current: 214012, peak: 214025, connected: 4, disconnected: 6, rate: -2/s
  4818. warn: Microsoft.AspNetCore.Server.Kestrel[22]
  4819.       Heartbeat took longer than "00:00:01" at "06/10/2019 03:09:03 +00:00".
  4820. [00:13:07] Current: 213750, peak: 214025, connected: 7, disconnected: 269, rate: -262/s
  4821. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4822.       Failed writing message. Aborting connection.
  4823. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4824.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4825.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4826.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4827.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4828. [00:13:08] Current: 212829, peak: 214025, connected: 17, disconnected: 938, rate: -921/s
  4829. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4830.       Failed writing message. Aborting connection.
  4831. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4832.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4833.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4834.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4835.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4836. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4837.       Failed writing message. Aborting connection.
  4838. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4839.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4840.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4841.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4842.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4843. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4844.       Failed writing message. Aborting connection.
  4845. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4846.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4847.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4848.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4849.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4850. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4851.       Failed writing message. Aborting connection.
  4852. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4853.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4854.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4855.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4856.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4857. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4858.       Failed writing message. Aborting connection.
  4859. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4860.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4861.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4862.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4863.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4864. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4865.       Failed writing message. Aborting connection.
  4866. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4867.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4868.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4869.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4870.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4871. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4872.       Failed writing message. Aborting connection.
  4873. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4874.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4875.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4876.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4877.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4878. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4879.       Failed writing message. Aborting connection.
  4880. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4881.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4882.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4883.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4884.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4885. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4886.       Failed writing message. Aborting connection.
  4887. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4888.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4889.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4890.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4891.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4892. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4893.       Failed writing message. Aborting connection.
  4894. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4895.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4896.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4897.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4898.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4899. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4900.       Failed writing message. Aborting connection.
  4901. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4902.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4903.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4904.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4905.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4906. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4907.       Failed writing message. Aborting connection.
  4908. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4909.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4910.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4911.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4912.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4913. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4914.       Failed writing message. Aborting connection.
  4915. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4916.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4917.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4918.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4919.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4920. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4921.       Failed writing message. Aborting connection.
  4922. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4923.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4924.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4925.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4926.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4927. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4928.       Failed writing message. Aborting connection.
  4929. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4930.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4931.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4932.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4933.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4934. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4935.       Failed writing message. Aborting connection.
  4936. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4937.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4938.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4939.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4940.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4941. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4942.       Failed writing message. Aborting connection.
  4943. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4944.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4945.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4946.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4947.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4948. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4949.       Failed writing message. Aborting connection.
  4950. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4951.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4952.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4953.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4954.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4955. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4956.       Failed writing message. Aborting connection.
  4957. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4958.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4959.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4960.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4961.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4962. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4963.       Failed writing message. Aborting connection.
  4964. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4965.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4966.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4967.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4968.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4969. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4970.       Failed writing message. Aborting connection.
  4971. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4972.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4973.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4974.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4975.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4976. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4977.       Failed writing message. Aborting connection.
  4978. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4979.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4980.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4981.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4982.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4983. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4984.       Failed writing message. Aborting connection.
  4985. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4986.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4987.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4988.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4989.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4990. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4991.       Failed writing message. Aborting connection.
  4992. System.InvalidOperationException: Writing is not allowed after writer was completed.
  4993.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  4994.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4995.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  4996.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  4997. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  4998.       Failed writing message. Aborting connection.
  4999. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5000.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5001.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5002.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5003.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5004. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5005.       Failed writing message. Aborting connection.
  5006. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5007.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5008.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5009.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5010.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5011. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5012.       Failed writing message. Aborting connection.
  5013. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5014.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5015.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5016.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5017.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5018. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5019.       Failed writing message. Aborting connection.
  5020. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5021.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5022.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5023.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5024.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5025. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5026.       Failed writing message. Aborting connection.
  5027. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5028.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5029.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5030.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5031.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5032. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5033.       Failed writing message. Aborting connection.
  5034. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5035.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5036.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5037.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5038.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5039. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5040.       Failed writing message. Aborting connection.
  5041. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5042.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5043.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5044.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5045.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5046. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5047.       Failed writing message. Aborting connection.
  5048. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5049.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5050.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5051.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5052.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5053. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5054.       Failed writing message. Aborting connection.
  5055. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5056.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5057.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5058.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5059.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5060. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5061.       Failed writing message. Aborting connection.
  5062. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5063.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5064.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5065.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5066.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5067. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5068.       Failed writing message. Aborting connection.
  5069. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5070.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5071.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5072.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5073.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5074. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5075.       Failed writing message. Aborting connection.
  5076. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5077.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5078.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5079.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5080.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5081. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5082.       Failed writing message. Aborting connection.
  5083. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5084.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5085.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5086.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5087.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5088. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5089.       Failed writing message. Aborting connection.
  5090. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5091.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5092.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5093.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5094.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5095. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5096.       Failed writing message. Aborting connection.
  5097. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5098.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5099.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5100.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5101.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5102. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5103.       Failed writing message. Aborting connection.
  5104. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5105.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5106.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5107.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5108.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5109. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5110.       Failed writing message. Aborting connection.
  5111. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5112.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5113.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5114.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5115.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5116. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5117.       Failed writing message. Aborting connection.
  5118. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5119.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5120.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5121.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5122.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5123. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5124.       Failed writing message. Aborting connection.
  5125. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5126.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5127.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5128.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5129.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5130. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5131.       Failed writing message. Aborting connection.
  5132. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5133.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5134.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5135.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5136.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5137. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5138.       Failed writing message. Aborting connection.
  5139. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5140.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5141.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5142.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5143.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5144. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5145.       Failed writing message. Aborting connection.
  5146. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5147.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5148.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5149.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5150.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5151. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5152.       Failed writing message. Aborting connection.
  5153. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5154.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5155.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5156.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5157.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5158. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5159.       Failed writing message. Aborting connection.
  5160. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5161.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5162.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5163.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5164.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5165. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5166.       Failed writing message. Aborting connection.
  5167. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5168.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5169.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5170.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5171.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5172. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5173.       Failed writing message. Aborting connection.
  5174. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5175.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5176.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5177.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5178.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5179. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5180.       Failed writing message. Aborting connection.
  5181. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5182.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5183.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5184.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5185.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5186. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5187.       Failed writing message. Aborting connection.
  5188. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5189.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5190.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5191.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5192.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5193. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5194.       Failed writing message. Aborting connection.
  5195. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5196.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5197.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5198.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5199.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5200. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5201.       Failed writing message. Aborting connection.
  5202. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5203.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5204.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5205.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5206.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5207. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5208.       Failed writing message. Aborting connection.
  5209. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5210.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5211.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5212.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5213.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5214. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5215.       Failed writing message. Aborting connection.
  5216. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5217.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5218.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5219.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5220.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5221. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5222.       Failed writing message. Aborting connection.
  5223. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5224.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5225.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5226.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5227.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5228. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5229.       Failed writing message. Aborting connection.
  5230. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5231.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5232.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5233.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5234.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5235. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5236.       Failed writing message. Aborting connection.
  5237. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5238.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5239.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5240.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5241.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5242. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5243.       Failed writing message. Aborting connection.
  5244. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5245.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5246.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5247.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5248.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5249. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5250.       Failed writing message. Aborting connection.
  5251. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5252.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5253.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5254.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5255.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5256. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5257.       Failed writing message. Aborting connection.
  5258. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5259.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5260.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5261.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5262.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5263. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5264.       Failed writing message. Aborting connection.
  5265. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5266.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5267.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5268.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5269.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5270. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5271.       Failed writing message. Aborting connection.
  5272. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5273.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5274.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5275.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5276.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5277. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5278.       Failed writing message. Aborting connection.
  5279. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5280.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5281.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5282.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5283.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5284. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5285.       Failed writing message. Aborting connection.
  5286. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5287.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5288.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5289.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5290.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5291. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5292.       Failed writing message. Aborting connection.
  5293. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5294.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5295.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5296.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5297.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5298. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5299.       Failed writing message. Aborting connection.
  5300. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5301.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5302.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5303.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5304.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5305. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5306.       Failed writing message. Aborting connection.
  5307. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5308.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5309.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5310.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5311.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5312. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5313.       Failed writing message. Aborting connection.
  5314. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5315.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5316.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5317.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5318.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5319. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5320.       Failed writing message. Aborting connection.
  5321. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5322.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5323.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5324.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5325.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5326. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5327.       Failed writing message. Aborting connection.
  5328. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5329.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5330.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5331.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5332.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5333. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5334.       Failed writing message. Aborting connection.
  5335. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5336.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5337.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5338.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5339.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5340. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5341.       Failed writing message. Aborting connection.
  5342. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5343.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5344.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5345.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5346.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5347. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5348.       Failed writing message. Aborting connection.
  5349. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5350.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5351.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5352.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5353.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5354. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5355.       Failed writing message. Aborting connection.
  5356. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5357.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5358.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5359.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5360.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5361. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5362.       Failed writing message. Aborting connection.
  5363. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5364.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5365.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5366.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5367.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5368. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5369.       Failed writing message. Aborting connection.
  5370. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5371.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5372.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5373.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5374.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5375. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5376.       Failed writing message. Aborting connection.
  5377. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5378.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5379.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5380.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5381.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5382. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5383.       Failed writing message. Aborting connection.
  5384. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5385.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5386.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5387.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5388.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5389. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5390.       Failed writing message. Aborting connection.
  5391. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5392.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5393.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5394.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5395.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5396. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5397.       Failed writing message. Aborting connection.
  5398. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5399.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5400.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5401.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5402.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5403. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5404.       Failed writing message. Aborting connection.
  5405. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5406.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5407.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5408.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5409.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5410. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5411.       Failed writing message. Aborting connection.
  5412. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5413.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5414.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5415.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5416.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5417. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5418.       Failed writing message. Aborting connection.
  5419. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5420.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5421.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5422.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5423.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5424. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5425.       Failed writing message. Aborting connection.
  5426. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5427.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5428.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5429.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5430.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5431. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5432.       Failed writing message. Aborting connection.
  5433. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5434.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5435.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5436.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5437.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5438. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5439.       Failed writing message. Aborting connection.
  5440. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5441.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5442.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5443.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5444.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5445. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5446.       Failed writing message. Aborting connection.
  5447. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5448.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5449.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5450.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5451.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5452. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5453.       Failed writing message. Aborting connection.
  5454. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5455.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5456.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5457.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5458.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5459. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5460.       Failed writing message. Aborting connection.
  5461. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5462.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5463.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5464.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5465.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5466. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5467.       Failed writing message. Aborting connection.
  5468. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5469.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5470.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5471.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5472.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5473. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5474.       Failed writing message. Aborting connection.
  5475. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5476.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5477.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5478.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5479.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5480. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5481.       Failed writing message. Aborting connection.
  5482. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5483.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5484.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5485.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5486.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5487. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5488.       Failed writing message. Aborting connection.
  5489. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5490.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5491.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5492.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5493.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5494. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5495.       Failed writing message. Aborting connection.
  5496. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5497.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5498.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5499.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5500.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5501. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5502.       Failed writing message. Aborting connection.
  5503. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5504.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5505.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5506.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5507.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5508. [00:13:09] Current: 212190, peak: 214025, connected: 45, disconnected: 684, rate: -639/s
  5509. [00:13:10] Current: 211800, peak: 214025, connected: 15, disconnected: 405, rate: -390/s
  5510. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5511.       Failed writing message. Aborting connection.
  5512. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5513.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5514.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5515.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5516.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5517. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5518.       Failed writing message. Aborting connection.
  5519. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5520.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5521.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5522.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5523.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5524. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5525.       Failed writing message. Aborting connection.
  5526. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5527.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5528.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5529.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5530.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5531. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5532.       Failed writing message. Aborting connection.
  5533. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5534.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5535.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5536.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5537.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5538. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5539.       Failed writing message. Aborting connection.
  5540. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5541.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5542.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5543.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5544.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5545. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5546.       Failed writing message. Aborting connection.
  5547. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5548.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5549.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5550.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5551.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5552. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5553.       Failed writing message. Aborting connection.
  5554. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5555.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5556.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5557.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5558.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5559. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5560.       Failed writing message. Aborting connection.
  5561. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5562.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5563.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5564.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5565.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5566. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5567.       Failed writing message. Aborting connection.
  5568. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5569.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5570.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5571.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5572.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5573. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5574.       Failed writing message. Aborting connection.
  5575. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5576.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5577.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5578.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5579.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5580. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5581.       Failed writing message. Aborting connection.
  5582. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5583.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5584.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5585.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5586.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5587. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5588.       Failed writing message. Aborting connection.
  5589. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5590.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5591.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5592.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5593.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5594. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5595.       Failed writing message. Aborting connection.
  5596. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5597.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5598.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5599.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5600.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5601. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5602.       Failed writing message. Aborting connection.
  5603. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5604.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5605.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5606.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5607.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5608. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5609.       Failed writing message. Aborting connection.
  5610. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5611.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5612.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5613.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5614.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5615. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5616.       Failed writing message. Aborting connection.
  5617. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5618.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5619.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5620.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5621.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5622. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5623.       Failed writing message. Aborting connection.
  5624. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5625.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5626.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5627.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5628.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5629. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5630.       Failed writing message. Aborting connection.
  5631. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5632.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5633.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5634.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5635.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5636. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5637.       Failed writing message. Aborting connection.
  5638. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5639.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5640.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5641.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5642.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5643. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5644.       Failed writing message. Aborting connection.
  5645. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5646.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5647.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5648.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5649.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5650. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5651.       Failed writing message. Aborting connection.
  5652. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5653.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5654.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5655.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5656.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5657. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5658.       Failed writing message. Aborting connection.
  5659. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5660.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5661.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5662.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5663.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5664. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5665.       Failed writing message. Aborting connection.
  5666. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5667.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5668.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5669.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5670.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5671. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5672.       Failed writing message. Aborting connection.
  5673. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5674.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5675.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5676.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5677.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5678. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5679.       Failed writing message. Aborting connection.
  5680. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5681.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5682.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5683.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5684.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5685. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5686.       Failed writing message. Aborting connection.
  5687. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5688.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5689.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5690.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5691.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5692. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5693.       Failed writing message. Aborting connection.
  5694. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5695.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5696.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5697.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5698.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5699. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5700.       Failed writing message. Aborting connection.
  5701. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5702.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5703.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5704.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5705.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5706. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5707.       Failed writing message. Aborting connection.
  5708. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5709.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5710.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5711.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5712.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5713. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5714.       Failed writing message. Aborting connection.
  5715. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5716.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5717.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5718.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5719.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5720. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5721.       Failed writing message. Aborting connection.
  5722. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5723.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5724.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5725.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5726.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5727. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5728.       Failed writing message. Aborting connection.
  5729. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5730.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5731.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5732.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5733.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5734. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5735.       Failed writing message. Aborting connection.
  5736. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5737.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5738.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5739.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5740.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5741. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5742.       Failed writing message. Aborting connection.
  5743. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5744.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5745.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5746.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5747.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5748. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5749.       Failed writing message. Aborting connection.
  5750. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5751.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5752.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5753.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5754.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5755. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5756.       Failed writing message. Aborting connection.
  5757. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5758.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5759.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5760.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5761.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5762. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5763.       Failed writing message. Aborting connection.
  5764. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5765.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5766.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5767.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5768.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5769. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5770.       Failed writing message. Aborting connection.
  5771. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5772.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5773.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5774.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5775.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5776. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5777.       Failed writing message. Aborting connection.
  5778. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5779.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5780.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5781.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5782.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5783. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5784.       Failed writing message. Aborting connection.
  5785. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5786.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5787.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5788.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5789.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5790. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5791.       Failed writing message. Aborting connection.
  5792. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5793.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5794.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5795.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5796.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5797. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5798.       Failed writing message. Aborting connection.
  5799. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5800.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5801.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5802.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5803.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5804. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5805.       Failed writing message. Aborting connection.
  5806. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5807.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5808.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5809.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5810.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5811. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5812.       Failed writing message. Aborting connection.
  5813. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5814.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5815.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5816.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5817.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5818. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5819.       Failed writing message. Aborting connection.
  5820. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5821.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5822.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5823.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5824.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5825. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5826.       Failed writing message. Aborting connection.
  5827. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5828.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5829.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5830.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5831.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5832. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5833.       Failed writing message. Aborting connection.
  5834. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5835.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5836.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5837.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5838.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5839. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5840.       Failed writing message. Aborting connection.
  5841. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5842.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5843.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5844.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5845.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5846. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5847.       Failed writing message. Aborting connection.
  5848. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5849.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5850.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5851.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5852.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5853. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5854.       Failed writing message. Aborting connection.
  5855. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5856.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5857.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5858.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5859.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5860. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5861.       Failed writing message. Aborting connection.
  5862. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5863.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5864.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5865.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5866.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5867. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5868.       Failed writing message. Aborting connection.
  5869. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5870.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5871.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5872.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5873.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5874. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5875.       Failed writing message. Aborting connection.
  5876. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5877.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5878.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5879.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5880.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5881. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5882.       Failed writing message. Aborting connection.
  5883. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5884.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5885.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5886.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5887.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5888. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5889.       Failed writing message. Aborting connection.
  5890. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5891.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5892.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5893.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5894.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5895. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5896.       Failed writing message. Aborting connection.
  5897. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5898.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5899.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5900.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5901.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5902. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5903.       Failed writing message. Aborting connection.
  5904. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5905.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5906.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5907.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5908.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5909. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5910.       Failed writing message. Aborting connection.
  5911. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5912.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5913.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5914.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5915.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5916. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5917.       Failed writing message. Aborting connection.
  5918. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5919.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5920.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5921.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5922.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5923. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5924.       Failed writing message. Aborting connection.
  5925. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5926.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5927.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5928.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5929.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5930. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5931.       Failed writing message. Aborting connection.
  5932. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5933.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5934.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5935.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5936.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5937. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5938.       Failed writing message. Aborting connection.
  5939. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5940.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5941.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5942.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5943.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5944. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5945.       Failed writing message. Aborting connection.
  5946. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5947.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5948.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5949.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5950.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5951. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5952.       Failed writing message. Aborting connection.
  5953. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5954.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5955.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5956.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5957.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5958. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5959.       Failed writing message. Aborting connection.
  5960. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5961.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5962.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5963.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5964.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5965. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5966.       Failed writing message. Aborting connection.
  5967. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5968.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5969.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5970.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5971.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5972. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5973.       Failed writing message. Aborting connection.
  5974. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5975.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5976.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5977.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5978.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5979. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5980.       Failed writing message. Aborting connection.
  5981. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5982.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5983.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5984.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5985.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5986. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5987.       Failed writing message. Aborting connection.
  5988. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5989.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5990.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5991.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5992.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  5993. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  5994.       Failed writing message. Aborting connection.
  5995. System.InvalidOperationException: Writing is not allowed after writer was completed.
  5996.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  5997.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5998.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  5999.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6000. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6001.       Failed writing message. Aborting connection.
  6002. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6003.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6004.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6005.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6006.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6007. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6008.       Failed writing message. Aborting connection.
  6009. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6010.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6011.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6012.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6013.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6014. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6015.       Failed writing message. Aborting connection.
  6016. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6017.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6018.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6019.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6020.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6021. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6022.       Failed writing message. Aborting connection.
  6023. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6024.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6025.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6026.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6027.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6028. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6029.       Failed writing message. Aborting connection.
  6030. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6031.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6032.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6033.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6034.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6035. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6036.       Failed writing message. Aborting connection.
  6037. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6038.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6039.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6040.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6041.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6042. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6043.       Failed writing message. Aborting connection.
  6044. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6045.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6046.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6047.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6048.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6049. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6050.       Failed writing message. Aborting connection.
  6051. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6052.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6053.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6054.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6055.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6056. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6057.       Failed writing message. Aborting connection.
  6058. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6059.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6060.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6061.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6062.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6063. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6064.       Failed writing message. Aborting connection.
  6065. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6066.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6067.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6068.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6069.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6070. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6071.       Failed writing message. Aborting connection.
  6072. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6073.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6074.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6075.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6076.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6077. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6078.       Failed writing message. Aborting connection.
  6079. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6080.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6081.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6082.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6083.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6084. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6085.       Failed writing message. Aborting connection.
  6086. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6087.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6088.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6089.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6090.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6091. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6092.       Failed writing message. Aborting connection.
  6093. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6094.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6095.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6096.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6097.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6098. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6099.       Failed writing message. Aborting connection.
  6100. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6101.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6102.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6103.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6104.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6105. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6106.       Failed writing message. Aborting connection.
  6107. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6108.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6109.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6110.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6111.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6112. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6113.       Failed writing message. Aborting connection.
  6114. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6115.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6116.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6117.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6118.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6119. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6120.       Failed writing message. Aborting connection.
  6121. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6122.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6123.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6124.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6125.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6126. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6127.       Failed writing message. Aborting connection.
  6128. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6129.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6130.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6131.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6132.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6133. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6134.       Failed writing message. Aborting connection.
  6135. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6136.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6137.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6138.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6139.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6140. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6141.       Failed writing message. Aborting connection.
  6142. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6143.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6144.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6145.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6146.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6147. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6148.       Failed writing message. Aborting connection.
  6149. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6150.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6151.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6152.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6153.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6154. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6155.       Failed writing message. Aborting connection.
  6156. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6157.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6158.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6159.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6160.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6161. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6162.       Failed writing message. Aborting connection.
  6163. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6164.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6165.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6166.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6167.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6168. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6169.       Failed writing message. Aborting connection.
  6170. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6171.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6172.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6173.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6174.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6175. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6176.       Failed writing message. Aborting connection.
  6177. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6178.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6179.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6180.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6181.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6182. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6183.       Failed writing message. Aborting connection.
  6184. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6185.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6186.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6187.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6188.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6189. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6190.       Failed writing message. Aborting connection.
  6191. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6192.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6193.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6194.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6195.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6196. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6197.       Failed writing message. Aborting connection.
  6198. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6199.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6200.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6201.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6202.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6203. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6204.       Failed writing message. Aborting connection.
  6205. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6206.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6207.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6208.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6209.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6210. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6211.       Failed writing message. Aborting connection.
  6212. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6213.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6214.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6215.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6216.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6217. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6218.       Failed writing message. Aborting connection.
  6219. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6220.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6221.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6222.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6223.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6224. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6225.       Failed writing message. Aborting connection.
  6226. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6227.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6228.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6229.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6230.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6231. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6232.       Failed writing message. Aborting connection.
  6233. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6234.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6235.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6236.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6237.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6238. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6239.       Failed writing message. Aborting connection.
  6240. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6241.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6242.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6243.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6244.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6245. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6246.       Failed writing message. Aborting connection.
  6247. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6248.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6249.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6250.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6251.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6252. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6253.       Failed writing message. Aborting connection.
  6254. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6255.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6256.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6257.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6258.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6259. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6260.       Failed writing message. Aborting connection.
  6261. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6262.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6263.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6264.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6265.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6266. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6267.       Failed writing message. Aborting connection.
  6268. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6269.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6270.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6271.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6272.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6273. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6274.       Failed writing message. Aborting connection.
  6275. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6276.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6277.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6278.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6279.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6280. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6281.       Failed writing message. Aborting connection.
  6282. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6283.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6284.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6285.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6286.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6287. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6288.       Failed writing message. Aborting connection.
  6289. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6290.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6291.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6292.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6293.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6294. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6295.       Failed writing message. Aborting connection.
  6296. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6297.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6298.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6299.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6300.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6301. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6302.       Failed writing message. Aborting connection.
  6303. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6304.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6305.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6306.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6307.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6308. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6309.       Failed writing message. Aborting connection.
  6310. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6311.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6312.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6313.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6314.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6315. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6316.       Failed writing message. Aborting connection.
  6317. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6318.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6319.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6320.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6321.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6322. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6323.       Failed writing message. Aborting connection.
  6324. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6325.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6326.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6327.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6328.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6329. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6330.       Failed writing message. Aborting connection.
  6331. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6332.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6333.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6334.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6335.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6336. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6337.       Failed writing message. Aborting connection.
  6338. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6339.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6340.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6341.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6342.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6343. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6344.       Failed writing message. Aborting connection.
  6345. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6346.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6347.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6348.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6349.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6350. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6351.       Failed writing message. Aborting connection.
  6352. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6353.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6354.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6355.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6356.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6357. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6358.       Failed writing message. Aborting connection.
  6359. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6360.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6361.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6362.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6363.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6364. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6365.       Failed writing message. Aborting connection.
  6366. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6367.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6368.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6369.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6370.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6371. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6372.       Failed writing message. Aborting connection.
  6373. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6374.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6375.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6376.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6377.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6378. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6379.       Failed writing message. Aborting connection.
  6380. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6381.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6382.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6383.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6384.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6385. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6386.       Failed writing message. Aborting connection.
  6387. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6388.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6389.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6390.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6391.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6392. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6393.       Failed writing message. Aborting connection.
  6394. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6395.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6396.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6397.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6398.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6399. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6400.       Failed writing message. Aborting connection.
  6401. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6402.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6403.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6404.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6405.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6406. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6407.       Failed writing message. Aborting connection.
  6408. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6409.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6410.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6411.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6412.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6413. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6414.       Failed writing message. Aborting connection.
  6415. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6416.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6417.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6418.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6419.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6420. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6421.       Failed writing message. Aborting connection.
  6422. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6423.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6424.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6425.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6426.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6427. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6428.       Failed writing message. Aborting connection.
  6429. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6430.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6431.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6432.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6433.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6434. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6435.       Failed writing message. Aborting connection.
  6436. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6437.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6438.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6439.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6440.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6441. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6442.       Failed writing message. Aborting connection.
  6443. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6444.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6445.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6446.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6447.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6448. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6449.       Failed writing message. Aborting connection.
  6450. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6451.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6452.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6453.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6454.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6455. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6456.       Failed writing message. Aborting connection.
  6457. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6458.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6459.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6460.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6461.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6462. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6463.       Failed writing message. Aborting connection.
  6464. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6465.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6466.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6467.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6468.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6469. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6470.       Failed writing message. Aborting connection.
  6471. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6472.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6473.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6474.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6475.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6476. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6477.       Failed writing message. Aborting connection.
  6478. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6479.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6480.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6481.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6482.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6483. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6484.       Failed writing message. Aborting connection.
  6485. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6486.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6487.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6488.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6489.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6490. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6491.       Failed writing message. Aborting connection.
  6492. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6493.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6494.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6495.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6496.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6497. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6498.       Failed writing message. Aborting connection.
  6499. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6500.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6501.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6502.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6503.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6504. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6505.       Failed writing message. Aborting connection.
  6506. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6507.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6508.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6509.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6510.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6511. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6512.       Failed writing message. Aborting connection.
  6513. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6514.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6515.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6516.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6517.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6518. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6519.       Failed writing message. Aborting connection.
  6520. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6521.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6522.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6523.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6524.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6525. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6526.       Failed writing message. Aborting connection.
  6527. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6528.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6529.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6530.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6531.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6532. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6533.       Failed writing message. Aborting connection.
  6534. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6535.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6536.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6537.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6538.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6539. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6540.       Failed writing message. Aborting connection.
  6541. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6542.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6543.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6544.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6545.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6546. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6547.       Failed writing message. Aborting connection.
  6548. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6549.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6550.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6551.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6552.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6553. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6554.       Failed writing message. Aborting connection.
  6555. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6556.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6557.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6558.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6559.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6560. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6561.       Failed writing message. Aborting connection.
  6562. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6563.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6564.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6565.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6566.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6567. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6568.       Failed writing message. Aborting connection.
  6569. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6570.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6571.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6572.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6573.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6574. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6575.       Failed writing message. Aborting connection.
  6576. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6577.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6578.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6579.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6580.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6581. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6582.       Failed writing message. Aborting connection.
  6583. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6584.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6585.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6586.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6587.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6588. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6589.       Failed writing message. Aborting connection.
  6590. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6591.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6592.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6593.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6594.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6595. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6596.       Failed writing message. Aborting connection.
  6597. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6598.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6599.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6600.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6601.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6602. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6603.       Failed writing message. Aborting connection.
  6604. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6605.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6606.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6607.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6608.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6609. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6610.       Failed writing message. Aborting connection.
  6611. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6612.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6613.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6614.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6615.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6616. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6617.       Failed writing message. Aborting connection.
  6618. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6619.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6620.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6621.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6622.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6623. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6624.       Failed writing message. Aborting connection.
  6625. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6626.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6627.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6628.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6629.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6630. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6631.       Failed writing message. Aborting connection.
  6632. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6633.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6634.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6635.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6636.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6637. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6638.       Failed writing message. Aborting connection.
  6639. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6640.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6641.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6642.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6643.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6644. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6645.       Failed writing message. Aborting connection.
  6646. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6647.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6648.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6649.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6650.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6651. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6652.       Failed writing message. Aborting connection.
  6653. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6654.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6655.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6656.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6657.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6658. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6659.       Failed writing message. Aborting connection.
  6660. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6661.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6662.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6663.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6664.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6665. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6666.       Failed writing message. Aborting connection.
  6667. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6668.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6669.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6670.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6671.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6672. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6673.       Failed writing message. Aborting connection.
  6674. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6675.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6676.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6677.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6678.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6679. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6680.       Failed writing message. Aborting connection.
  6681. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6682.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6683.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6684.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6685.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6686. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6687.       Failed writing message. Aborting connection.
  6688. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6689.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6690.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6691.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6692.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6693. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6694.       Failed writing message. Aborting connection.
  6695. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6696.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6697.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6698.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6699.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6700. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6701.       Failed writing message. Aborting connection.
  6702. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6703.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6704.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6705.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6706.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6707. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6708.       Failed writing message. Aborting connection.
  6709. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6710.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6711.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6712.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6713.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6714. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6715.       Failed writing message. Aborting connection.
  6716. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6717.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6718.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6719.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6720.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6721. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6722.       Failed writing message. Aborting connection.
  6723. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6724.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6725.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6726.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6727.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6728. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6729.       Failed writing message. Aborting connection.
  6730. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6731.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6732.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6733.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6734.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6735. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6736.       Failed writing message. Aborting connection.
  6737. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6738.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6739.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6740.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6741.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6742. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6743.       Failed writing message. Aborting connection.
  6744. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6745.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6746.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6747.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6748.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6749. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6750.       Failed writing message. Aborting connection.
  6751. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6752.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6753.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6754.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6755.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6756. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6757.       Failed writing message. Aborting connection.
  6758. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6759.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6760.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6761.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6762.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6763. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6764.       Failed writing message. Aborting connection.
  6765. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6766.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6767.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6768.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6769.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6770. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6771.       Failed writing message. Aborting connection.
  6772. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6773.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6774.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6775.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6776.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6777. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6778.       Failed writing message. Aborting connection.
  6779. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6780.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6781.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6782.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6783.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6784. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6785.       Failed writing message. Aborting connection.
  6786. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6787.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6788.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6789.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6790.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6791. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6792.       Failed writing message. Aborting connection.
  6793. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6794.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6795.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6796.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6797.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6798. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6799.       Failed writing message. Aborting connection.
  6800. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6801.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6802.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6803.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6804.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6805. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6806.       Failed writing message. Aborting connection.
  6807. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6808.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6809.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6810.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6811.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6812. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6813.       Failed writing message. Aborting connection.
  6814. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6815.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6816.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6817.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6818.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6819. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6820.       Failed writing message. Aborting connection.
  6821. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6822.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6823.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6824.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6825.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6826. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6827.       Failed writing message. Aborting connection.
  6828. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6829.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6830.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6831.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6832.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6833. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6834.       Failed writing message. Aborting connection.
  6835. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6836.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6837.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6838.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6839.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6840. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6841.       Failed writing message. Aborting connection.
  6842. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6843.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6844.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6845.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6846.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6847. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6848.       Failed writing message. Aborting connection.
  6849. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6850.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6851.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6852.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6853.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6854. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6855.       Failed writing message. Aborting connection.
  6856. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6857.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6858.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6859.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6860.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6861. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6862.       Failed writing message. Aborting connection.
  6863. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6864.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6865.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6866.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6867.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6868. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6869.       Failed writing message. Aborting connection.
  6870. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6871.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6872.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6873.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6874.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6875. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6876.       Failed writing message. Aborting connection.
  6877. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6878.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6879.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6880.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6881.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6882. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6883.       Failed writing message. Aborting connection.
  6884. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6885.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6886.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6887.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6888.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6889. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6890.       Failed writing message. Aborting connection.
  6891. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6892.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6893.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6894.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6895.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6896. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6897.       Failed writing message. Aborting connection.
  6898. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6899.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6900.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6901.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6902.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6903. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6904.       Failed writing message. Aborting connection.
  6905. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6906.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6907.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6908.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6909.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6910. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6911.       Failed writing message. Aborting connection.
  6912. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6913.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6914.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6915.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6916.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6917. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6918.       Failed writing message. Aborting connection.
  6919. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6920.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6921.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6922.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6923.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6924. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6925.       Failed writing message. Aborting connection.
  6926. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6927.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6928.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6929.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6930.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6931. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6932.       Failed writing message. Aborting connection.
  6933. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6934.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6935.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6936.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6937.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6938. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6939.       Failed writing message. Aborting connection.
  6940. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6941.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6942.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6943.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6944.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6945. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6946.       Failed writing message. Aborting connection.
  6947. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6948.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6949.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6950.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6951.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6952. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6953.       Failed writing message. Aborting connection.
  6954. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6955.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6956.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6957.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6958.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6959. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6960.       Failed writing message. Aborting connection.
  6961. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6962.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6963.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6964.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6965.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6966. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6967.       Failed writing message. Aborting connection.
  6968. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6969.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6970.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6971.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6972.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6973. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6974.       Failed writing message. Aborting connection.
  6975. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6976.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6977.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6978.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6979.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6980. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6981.       Failed writing message. Aborting connection.
  6982. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6983.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6984.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6985.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6986.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6987. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6988.       Failed writing message. Aborting connection.
  6989. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6990.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6991.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6992.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6993.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  6994. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  6995.       Failed writing message. Aborting connection.
  6996. System.InvalidOperationException: Writing is not allowed after writer was completed.
  6997.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  6998.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  6999.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7000.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  7001. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  7002.       Failed writing message. Aborting connection.
  7003. System.InvalidOperationException: Writing is not allowed after writer was completed.
  7004.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  7005.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7006.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7007.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  7008. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  7009.       Failed writing message. Aborting connection.
  7010. System.InvalidOperationException: Writing is not allowed after writer was completed.
  7011.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  7012.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7013.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7014.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  7015. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  7016.       Failed writing message. Aborting connection.
  7017. System.InvalidOperationException: Writing is not allowed after writer was completed.
  7018.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  7019.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7020.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7021.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  7022. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  7023.       Failed writing message. Aborting connection.
  7024. System.InvalidOperationException: Writing is not allowed after writer was completed.
  7025.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  7026.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7027.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7028.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  7029. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  7030.       Failed writing message. Aborting connection.
  7031. System.InvalidOperationException: Writing is not allowed after writer was completed.
  7032.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  7033.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7034.    at System.IO.Pipelines.Pipe.DefaultPipeWriter.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7035.    at Microsoft.AspNetCore.SignalR.HubConnectionContext.TryWritePingSlowAsync() in /aspnetcore/src/SignalR/server/Core/src/HubConnectionContext.cs:line 301
  7036. fail: Microsoft.AspNetCore.SignalR.HubConnectionContext[6]
  7037.       Failed writing message. Aborting connection.
  7038. System.InvalidOperationException: Writing is not allowed after writer was completed.
  7039.    at System.IO.Pipelines.ThrowHelper.ThrowInvalidOperationException_NoWritingAllowed()
  7040.    at System.IO.Pipelines.Pipe.WriteAsync(ReadOnlyMemory`1 source, CancellationToken cancellationToken)
  7041.    at System.IO.Pipelines.Pipe.DefaultP