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  1. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  3. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  4. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  5. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  6. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  7. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  8. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  9. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  10. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  11. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  12. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  13. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  14. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  15. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  16. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  17. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  18. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  19. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  20. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  21. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  22. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  23. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  24. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  25. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  26. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  27. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  28. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  29. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  30. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  31. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  32. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  33. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  34. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  35. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  36. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  37. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  38. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  39. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  40. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  41. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  42. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  43. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  44. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  45. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  46. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  47. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  48. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  49. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  50. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  51. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  52. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  53. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  54. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  55. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  56. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  57. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  58. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  59. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  60. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  61. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  62. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  63. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  64. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  65. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  66. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  67. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  68. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  69. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  70. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  71. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  72. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  73. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  74. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  75. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  76. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  77. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  78. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  79. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  80. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  81. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  82. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  83. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  84. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  85. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  86. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  87. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  88. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  89. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  90. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  91. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  92. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  93. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  94. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  95. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  96. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  97. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  98. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  99. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  100. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  101. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  102. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  103. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  104. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  105. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  106. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  107. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  108. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  109. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  110. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  111. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  112. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  113. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  114. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  115. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  116. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  117. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  118. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  119. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  120. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  121. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  122. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  123. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  124. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  125. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  126. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  127. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  128. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  129. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  130. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  131. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  132. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  133. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  134. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  135. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  136. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  137. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  138. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  139. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  140. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  141. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  142. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  143. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  144. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  145. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  146. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  147. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  148. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  149. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  150. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  151. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  152. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  153. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  154. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  155. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  156. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  157. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  158. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  159. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  160. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  161. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  162. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  163. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  164. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  165. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  166. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  167. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  168. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  169. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  170. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  171. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  172. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  173. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  174. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  175. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  176. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  177. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  178. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  179. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  180. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  181. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  182. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  183. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  184. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  185. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  186. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  187. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  188. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  189. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  190. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  191. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  192. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  193. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  194. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  195. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  196. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  197. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  198. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  199. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  200. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  201. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  202. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  203. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  204. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  205. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  206. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  207. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  208. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  209. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  210. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  211. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  212. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  213. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  214. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  215. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  216. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  217. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  218. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  219. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  220. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  221. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  222. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  223. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  224. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  225. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  226. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  227. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  228. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  229. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  230. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  231. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  232. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  233. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  234. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  235. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  236. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  237. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  238. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  239. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  240. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  241. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  242. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  243. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  244. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  245. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  246. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  247. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  248. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  249. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  250. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  251. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  252. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  253. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  254. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  255. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  256. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  257. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  258. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  259. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  260. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  261. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  262. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  263. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  264. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  265. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  266. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  267. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  268. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  269. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  270. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  271. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  272. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  273. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  274. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  275. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  276. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  277. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  278. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  279. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  280. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  281. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  282. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  283. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  284. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  285. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  286. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  287. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  288. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  289. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  290. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  291. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  292. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  293. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  294. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  295. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  296. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  297. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  298. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  299. [11:24:13] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  300. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  301. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  302. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  303. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  304. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  305. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  306. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  307. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  308. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  309. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  310. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  311. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  312. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  313. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  314. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  315. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  316. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  317. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  318. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  319. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  320. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  321. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  322. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  323. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  324. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  325. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  326. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  327. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  328. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  329. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  330. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  331. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  332. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  333. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  334. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  335. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  336. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  337. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  338. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  339. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  340. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  341. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  342. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  343. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  344. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  345. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  346. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  347. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  348. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  349. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  350. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  351. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  352. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  353. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  354. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  355. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  356. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  357. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  358. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  359. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  360. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  361. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  362. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  363. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  364. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  365. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  366. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  367. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  368. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  369. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  370. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  371. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  372. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  373. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  374. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  375. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  376. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  377. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  378. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  379. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  380. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  381. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  382. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  383. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  384. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  385. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  386. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  387. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  388. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  389. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  390. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  391. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  392. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  393. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  394. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  395. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  396. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  397. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  398. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  399. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  400. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  401. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  402. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  403. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  404. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  405. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  406. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  407. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  408. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  409. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  410. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  411. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  412. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  413. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  414. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  415. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  416. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  417. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  418. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  419. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  420. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  421. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  422. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  423. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  424. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  425. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  426. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  427. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  428. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  429. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  430. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  431. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  432. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  433. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  434. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  435. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  436. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  437. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  438. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  439. [11:24:14] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  440. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  441. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  442. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  443. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  444. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  445. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  446. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  447. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  448. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  449. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  450. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  451. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  452. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  453. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  454. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  455. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  456. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  457. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  458. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  459. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  460. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  461. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  462. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  463. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  464. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  465. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  466. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  467. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  468. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  469. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  470. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  471. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  472. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  473. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  474. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  475. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  476. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  477. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  478. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  479. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  480. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  481. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  482. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  483. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  484. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  485. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  486. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  487. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  488. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  489. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  490. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  491. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  492. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  493. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  494. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  495. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  496. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  497. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  498. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  499. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  500. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  501. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  502. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  503. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  504. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  505. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  506. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  507. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  508. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  509. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  510. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  511. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  512. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  513. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  514. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  515. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  516. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  517. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  518. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  519. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  520. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  521. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  522. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  523. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  524. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  525. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  526. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  527. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  528. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  529. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  530. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  531. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  532. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  533. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  534. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  535. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  536. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  537. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  538. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  539. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  540. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  541. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  542. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  543. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  544. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  545. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  546. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  547. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  548. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  549. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  550. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  551. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  552. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  553. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  554. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  555. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  556. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  557. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  558. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  559. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  560. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  561. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  562. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  563. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  564. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  565. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  566. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  567. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  568. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  569. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  570. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  571. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  572. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  573. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  574. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  575. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  576. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  577. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  578. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  579. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  580. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  581. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  582. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  583. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  584. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  585. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  586. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  587. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  588. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  589. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  590. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  591. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  592. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  593. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  594. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  595. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  596. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  597. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  598. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  599. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  600. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  601. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  602. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  603. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  604. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  605. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  606. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  607. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  608. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  609. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  610. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  611. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  612. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  613. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  614. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  615. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  616. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  617. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  618. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  619. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  620. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  621. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  622. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  623. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  624. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  625. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  626. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  627. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  628. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  629. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  630. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  631. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  632. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  633. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  634. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  635. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  636. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  637. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  638. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  639. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  640. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  641. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  642. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  643. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  644. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  645. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  646. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  647. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  648. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  649. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  650. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  651. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  652. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  653. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  654. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  655. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  656. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  657. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  658. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  659. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  660. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  661. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  662. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  663. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  664. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  665. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  666. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  667. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  668. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  669. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  670. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  671. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  672. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  673. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  674. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  675. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  676. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  677. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  678. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  679. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  680. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  681. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  682. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  683. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  684. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  685. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  686. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  687. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  688. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  689. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  690. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  691. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  692. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  693. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  694. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  695. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  696. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  697. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  698. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  699. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  700. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  701. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  702. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  703. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  704. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  705. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  706. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  707. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  708. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  709. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  710. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  711. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  712. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  713. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  714. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  715. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  716. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  717. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  718. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  719. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  720. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  721. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  722. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  723. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  724. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  725. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  726. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  727. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  728. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  729. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  730. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  731. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  732. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  733. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  734. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  735. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  736. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  737. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  738. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  739. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  740. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  741. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  742. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  743. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  744. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  745. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  746. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  747. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  748. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  749. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  750. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  751. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  752. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  753. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  754. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  755. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  756. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  757. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  758. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  759. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  760. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  761. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  762. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  763. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  764. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  765. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  766. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  767. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  768. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  769. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  770. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  771. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  772. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  773. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  774. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  775. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  776. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  777. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  778. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  779. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  780. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  781. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  782. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  783. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  784. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  785. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  786. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  787. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  788. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  789. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  790. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  791. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  792. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  793. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  794. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  795. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  796. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  797. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  798. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  799. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  800. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  801. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  802. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  803. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  804. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  805. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  806. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  807. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  808. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  809. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  810. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  811. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  812. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  813. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  814. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  815. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  816. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  817. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  818. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  819. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  820. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  821. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  822. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  823. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  824. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  825. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  826. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  827. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  828. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  829. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  830. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  831. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  832. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  833. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  834. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  835. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  836. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  837. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  838. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  839. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  840. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  841. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  842. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  843. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  844. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  845. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  846. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  847. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  848. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  849. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  850. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  851. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  852. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  853. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  854. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  855. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  856. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  857. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  858. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  859. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  860. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  861. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  862. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  863. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  864. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  865. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  866. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  867. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  868. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  869. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  870. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  871. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  872. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  873. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  874. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  875. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  876. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  877. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  878. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  879. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  880. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  881. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  882. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  883. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  884. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  885. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  886. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  887. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  888. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  889. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  890. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  891. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  892. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  893. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  894. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  895. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  896. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  897. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  898. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  899. [11:24:29] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  900. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  901. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  902. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  903. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  904. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  905. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  906. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  907. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  908. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  909. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  910. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  911. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  912. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  913. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  914. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  915. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  916. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  917. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  918. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  919. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  920. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  921. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  922. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  923. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  924. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  925. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  926. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  927. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  928. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  929. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  930. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  931. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  932. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  933. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  934. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  935. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  936. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  937. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  938. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  939. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  940. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  941. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  942. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  943. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  944. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  945. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  946. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  947. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  948. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  949. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  950. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  951. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  952. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  953. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  954. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  955. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  956. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  957. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  958. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  959. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  960. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  961. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  962. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  963. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  964. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  965. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  966. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  967. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  968. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  969. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  970. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  971. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  972. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  973. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  974. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  975. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  976. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  977. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  978. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  979. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  980. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  981. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  982. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  983. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  984. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  985. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  986. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  987. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  988. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  989. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  990. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  991. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  992. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  993. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  994. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  995. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  996. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  997. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  998. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  999. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1000. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1001. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1002. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1003. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1004. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1005. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1006. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1007. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1008. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1009. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1010. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1011. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1012. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1013. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1014. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1015. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1016. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1017. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1018. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1019. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1020. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1021. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1022. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1023. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1024. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1025. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1026. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1027. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1028. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1029. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1030. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1031. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1032. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1033. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1034. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1035. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1036. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1037. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1038. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1039. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1040. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1041. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1042. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1043. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1044. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1045. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1046. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1047. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1048. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1049. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1050. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1051. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1052. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1053. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1054. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1055. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1056. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1057. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1058. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1059. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1060. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1061. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1062. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1063. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1064. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1065. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1066. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1067. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1068. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1069. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1070. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1071. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1072. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1073. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1074. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1075. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1076. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1077. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1078. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1079. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1080. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1081. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1082. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1083. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1084. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1085. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1086. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1087. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1088. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1089. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1090. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1091. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1092. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1093. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1094. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1095. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1096. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1097. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1098. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1099. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1100. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1101. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1102. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1103. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1104. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1105. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1106. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1107. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1108. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1109. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1110. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1111. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1112. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1113. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1114. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1115. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1116. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1117. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1118. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1119. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1120. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1121. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1122. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1123. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1124. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1125. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1126. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1127. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1128. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1129. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1130. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1131. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1132. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1133. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1134. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1135. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1136. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1137. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1138. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1139. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1140. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1141. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1142. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1143. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1144. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1145. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1146. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1147. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1148. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1149. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1150. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1151. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1152. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1153. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1154. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1155. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1156. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1157. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1158. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1159. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1160. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1161. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1162. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1163. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1164. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1165. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1166. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1167. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1168. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1169. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1170. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1171. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1172. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1173. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1174. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1175. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1176. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1177. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1178. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1179. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1180. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1181. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1182. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1183. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1184. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1185. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1186. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1187. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1188. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1189. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1190. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1191. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1192. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1193. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1194. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1195. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1196. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1197. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1198. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1199. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1200. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1201. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1202. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1203. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1204. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1205. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1206. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1207. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1208. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1209. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1210. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1211. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1212. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1213. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1214. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1215. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1216. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1217. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1218. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1219. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1220. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1221. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1222. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1223. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1224. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1225. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1226. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1227. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1228. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1229. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1230. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1231. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1232. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1233. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1234. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1235. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1236. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1237. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1238. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1239. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1240. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1241. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1242. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1243. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1244. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1245. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1246. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1247. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1248. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1249. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1250. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1251. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1252. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1253. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1254. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1255. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1256. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1257. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1258. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1259. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1260. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1261. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1262. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1263. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1264. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1265. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1266. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1267. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1268. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1269. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1270. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1271. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1272. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1273. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1274. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1275. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1276. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1277. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1278. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1279. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1280. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1281. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1282. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1283. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1284. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1285. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1286. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1287. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1288. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1289. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1290. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1291. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1292. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1293. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1294. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1295. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1296. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1297. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1298. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1299. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1300. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1301. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1302. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1303. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1304. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1305. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1306. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1307. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1308. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1309. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1310. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1311. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1312. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1313. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1314. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1315. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1316. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1317. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1318. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1319. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1320. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1321. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1322. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1323. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1324. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1325. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1326. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1327. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1328. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1329. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1330. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1331. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1332. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1333. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1334. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1335. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1336. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1337. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1338. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1339. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1340. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1341. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1342. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1343. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1344. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1345. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1346. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1347. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1348. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1349. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1350. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1351. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1352. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1353. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1354. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1355. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1356. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1357. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1358. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1359. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1360. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1361. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1362. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1363. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1364. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1365. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1366. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1367. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1368. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1369. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1370. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1371. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1372. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1373. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1374. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1375. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1376. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1377. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1378. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1379. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1380. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1381. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1382. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1383. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1384. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1385. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1386. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1387. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1388. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1389. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1390. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1391. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1392. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1393. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1394. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1395. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1396. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1397. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1398. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1399. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1400. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1401. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1402. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1403. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1404. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1405. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1406. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1407. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1408. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1409. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1410. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1411. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1412. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1413. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1414. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1415. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1416. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1417. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1418. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1419. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1420. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1421. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1422. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1423. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1424. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1425. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1426. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1427. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1428. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1429. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1430. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1431. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1432. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1433. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1434. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1435. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1436. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1437. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1438. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1439. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1440. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1441. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1442. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1443. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1444. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1445. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1446. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1447. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1448. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1449. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1450. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1451. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1452. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1453. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1454. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1455. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1456. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1457. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1458. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1459. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1460. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1461. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1462. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1463. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1464. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1465. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1466. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1467. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1468. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1469. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1470. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1471. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1472. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1473. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1474. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1475. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1476. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1477. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1478. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1479. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1480. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1481. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1482. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1483. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1484. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1485. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1486. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1487. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1488. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1489. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1490. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1491. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1492. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1493. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1494. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1495. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1496. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1497. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1498. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1499. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1500. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1501. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1502. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1503. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1504. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1505. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1506. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1507. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1508. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1509. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1510. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1511. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1512. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1513. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1514. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1515. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1516. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1517. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1518. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1519. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1520. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1521. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1522. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1523. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1524. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1525. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1526. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1527. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1528. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1529. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1530. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1531. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1532. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1533. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1534. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1535. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1536. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1537. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1538. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1539. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1540. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1541. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1542. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1543. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1544. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1545. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1546. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1547. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1548. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1549. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1550. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1551. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1552. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1553. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1554. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1555. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1556. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1557. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1558. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1559. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1560. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1561. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1562. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1563. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1564. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1565. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1566. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1567. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1568. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1569. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1570. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1571. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1572. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1573. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1574. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1575. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1576. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1577. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1578. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1579. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1580. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1581. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1582. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1583. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1584. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1585. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1586. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1587. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1588. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1589. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1590. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1591. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1592. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1593. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1594. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1595. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1596. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1597. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1598. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1599. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1600. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1601. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1602. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1603. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1604. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1605. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1606. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1607. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1608. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1609. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1610. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1611. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1612. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1613. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1614. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1615. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1616. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1617. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1618. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1619. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1620. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1621. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1622. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1623. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1624. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1625. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1626. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1627. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1628. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1629. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1630. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1631. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1632. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1633. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1634. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1635. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1636. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1637. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1638. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1639. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1640. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1641. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1642. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1643. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1644. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1645. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1646. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1647. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1648. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1649. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1650. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1651. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1652. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1653. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1654. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1655. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1656. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1657. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1658. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1659. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1660. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1661. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1662. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1663. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1664. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1665. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1666. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1667. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1668. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1669. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1670. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1671. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1672. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1673. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1674. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1675. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1676. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1677. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1678. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1679. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1680. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1681. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1682. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1683. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1684. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1685. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1686. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1687. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1688. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1689. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1690. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1691. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1692. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1693. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1694. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1695. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1696. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1697. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1698. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1699. [11:24:30] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1700. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1701. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1702. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1703. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1704. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1705. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1706. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1707. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1708. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1709. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1710. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1711. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1712. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1713. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1714. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1715. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1716. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1717. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1718. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1719. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1720. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1721. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1722. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1723. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1724. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1725. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1726. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1727. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1728. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1729. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1730. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1731. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1732. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1733. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1734. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1735. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1736. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1737. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1738. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1739. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1740. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1741. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1742. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1743. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1744. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1745. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1746. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1747. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1748. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1749. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1750. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1751. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1752. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1753. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1754. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1755. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1756. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1757. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1758. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1759. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1760. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1761. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1762. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1763. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1764. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1765. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1766. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1767. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1768. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1769. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1770. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1771. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1772. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1773. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1774. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1775. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1776. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1777. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1778. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1779. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1780. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1781. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1782. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1783. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1784. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1785. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1786. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1787. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1788. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1789. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1790. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1791. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1792. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1793. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1794. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1795. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1796. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1797. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1798. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1799. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1800. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1801. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1802. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1803. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1804. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1805. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1806. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1807. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1808. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1809. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1810. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1811. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1812. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1813. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1814. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1815. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1816. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1817. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1818. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1819. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1820. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1821. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1822. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1823. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1824. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1825. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1826. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1827. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1828. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1829. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1830. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1831. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1832. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1833. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1834. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1835. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1836. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1837. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1838. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1839. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1840. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1841. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1842. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1843. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1844. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1845. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1846. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1847. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1848. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1849. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1850. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1851. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1852. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1853. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1854. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1855. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1856. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1857. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1858. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1859. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1860. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1861. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1862. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1863. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1864. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1865. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1866. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1867. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1868. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1869. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1870. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1871. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1872. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1873. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1874. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1875. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1876. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1877. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1878. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1879. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1880. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1881. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1882. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1883. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1884. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1885. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1886. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1887. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1888. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1889. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1890. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1891. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1892. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1893. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1894. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1895. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1896. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1897. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1898. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1899. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1900. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1901. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1902. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1903. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1904. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1905. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1906. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1907. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1908. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1909. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1910. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1911. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1912. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1913. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1914. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1915. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1916. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1917. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1918. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1919. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1920. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1921. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1922. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1923. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1924. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1925. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1926. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1927. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1928. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1929. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1930. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1931. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1932. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1933. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1934. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1935. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1936. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1937. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1938. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1939. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1940. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1941. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1942. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1943. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1944. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1945. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1946. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1947. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1948. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1949. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1950. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1951. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1952. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1953. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1954. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1955. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1956. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1957. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1958. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1959. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1960. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1961. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1962. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1963. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1964. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1965. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1966. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1967. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1968. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1969. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1970. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1971. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1972. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1973. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1974. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1975. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1976. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1977. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1978. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1979. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  1980. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  1981. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1982. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1983. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1984. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1985. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  1986. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  1987. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  1988. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  1989. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1990. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1991. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1992. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1993. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1994. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1995. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1996. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1997. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  1998. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  1999. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2000. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2001. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2002. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2003. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2004. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2005. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2006. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2007. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2008. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2009. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2010. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2011. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2012. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2013. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2014. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2015. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2016. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2017. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2018. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2019. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2020. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2021. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2022. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2023. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2024. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2025. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2026. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2027. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2028. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2029. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2030. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2031. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2032. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2033. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2034. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2035. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2036. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2037. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2038. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2039. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2040. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2041. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2042. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2043. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2044. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2045. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2046. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2047. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2048. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2049. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2050. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2051. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2052. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2053. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2054. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2055. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2056. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2057. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2058. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2059. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2060. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2061. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2062. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2063. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2064. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2065. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2066. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2067. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2068. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2069. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2070. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2071. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2072. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2073. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2074. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2075. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2076. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2077. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2078. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2079. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2080. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2081. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2082. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2083. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2084. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2085. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2086. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2087. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2088. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2089. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2090. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2091. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2092. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2093. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2094. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2095. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2096. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2097. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2098. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2099. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2100. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2101. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2102. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2103. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2104. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2105. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2106. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2107. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2108. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2109. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2110. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2111. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2112. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2113. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2114. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2115. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2116. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2117. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2118. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2119. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2120. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2121. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2122. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2123. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2124. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2125. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2126. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2127. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2128. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2129. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2130. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2131. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2132. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2133. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2134. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2135. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2136. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2137. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2138. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2139. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2140. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2141. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2142. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2143. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2144. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2145. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2146. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2147. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2148. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2149. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2150. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2151. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2152. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2153. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2154. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2155. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2156. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2157. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2158. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2159. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2160. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2161. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2162. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2163. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2164. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2165. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2166. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2167. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2168. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2169. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2170. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2171. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2172. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2173. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2174. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2175. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2176. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2177. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2178. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2179. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2180. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2181. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2182. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2183. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2184. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2185. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2186. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2187. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2188. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2189. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2190. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2191. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2192. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2193. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2194. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2195. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2196. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2197. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2198. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2199. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2200. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2201. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2202. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2203. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2204. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2205. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2206. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2207. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2208. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2209. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2210. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2211. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2212. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2213. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2214. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2215. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2216. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2217. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2218. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2219. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2220. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2221. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2222. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2223. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2224. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2225. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2226. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2227. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2228. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2229. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2230. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2231. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2232. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2233. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2234. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2235. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2236. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2237. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2238. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2239. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2240. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2241. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2242. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2243. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2244. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2245. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2246. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2247. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2248. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2249. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2250. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2251. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2252. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2253. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2254. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2255. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2256. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2257. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2258. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2259. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2260. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2261. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2262. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2263. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2264. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2265. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2266. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2267. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2268. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2269. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2270. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2271. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2272. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2273. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2274. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2275. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2276. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2277. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2278. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2279. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2280. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2281. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2282. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2283. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2284. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2285. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2286. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2287. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2288. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2289. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2290. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2291. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2292. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2293. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2294. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2295. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2296. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2297. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2298. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2299. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2300. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2301. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2302. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2303. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2304. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2305. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2306. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2307. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2308. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2309. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2310. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2311. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2312. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2313. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2314. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2315. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2316. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2317. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2318. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2319. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2320. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2321. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2322. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2323. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2324. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2325. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2326. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2327. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2328. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2329. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2330. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2331. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2332. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2333. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2334. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2335. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2336. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2337. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2338. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2339. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2340. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2341. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2342. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2343. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2344. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2345. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2346. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2347. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2348. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2349. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2350. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2351. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2352. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2353. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2354. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2355. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2356. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2357. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2358. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2359. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2360. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2361. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2362. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2363. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2364. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2365. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2366. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2367. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2368. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2369. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2370. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2371. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2372. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2373. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2374. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2375. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2376. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2377. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2378. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2379. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2380. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2381. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2382. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2383. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2384. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2385. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2386. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2387. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2388. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2389. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2390. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2391. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2392. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2393. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2394. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2395. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2396. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2397. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2398. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2399. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2400. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2401. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2402. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2403. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2404. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2405. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2406. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2407. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2408. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2409. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2410. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2411. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2412. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2413. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2414. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2415. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2416. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2417. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2418. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2419. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2420. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2421. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2422. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2423. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2424. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2425. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2426. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2427. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2428. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2429. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2430. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2431. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2432. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2433. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2434. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2435. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2436. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2437. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2438. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2439. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2440. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2441. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2442. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2443. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2444. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2445. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2446. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2447. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2448. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2449. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2450. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2451. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2452. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2453. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2454. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2455. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2456. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2457. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2458. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2459. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2460. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2461. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2462. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2463. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2464. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2465. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2466. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2467. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2468. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2469. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2470. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2471. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2472. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2473. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2474. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2475. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2476. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2477. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2478. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2479. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2480. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2481. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2482. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2483. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2484. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2485. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2486. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2487. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2488. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2489. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2490. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2491. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2492. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2493. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2494. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2495. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2496. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2497. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2498. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2499. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2500. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2501. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2502. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2503. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2504. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2505. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2506. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2507. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2508. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2509. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2510. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2511. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2512. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2513. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2514. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2515. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2516. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2517. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2518. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2519. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2520. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2521. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2522. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2523. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2524. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2525. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2526. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2527. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2528. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2529. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2530. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2531. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2532. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2533. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2534. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2535. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2536. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2537. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2538. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2539. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2540. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2541. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2542. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2543. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2544. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2545. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2546. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2547. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2548. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2549. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2550. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2551. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2552. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2553. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2554. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2555. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2556. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2557. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2558. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2559. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2560. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2561. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2562. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2563. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2564. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2565. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2566. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2567. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2568. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2569. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2570. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2571. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2572. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2573. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2574. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2575. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2576. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2577. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2578. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2579. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2580. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2581. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2582. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2583. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2584. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2585. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2586. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2587. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2588. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2589. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2590. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2591. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2592. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2593. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2594. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2595. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2596. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2597. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2598. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2599. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2600. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2601. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2602. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2603. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2604. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2605. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2606. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2607. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2608. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2609. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2610. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2611. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2612. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2613. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2614. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2615. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2616. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2617. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2618. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2619. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2620. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2621. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2622. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2623. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2624. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2625. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2626. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2627. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2628. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2629. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2630. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2631. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2632. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2633. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2634. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2635. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2636. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2637. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2638. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2639. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2640. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2641. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2642. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2643. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2644. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2645. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2646. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2647. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2648. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2649. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2650. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2651. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2652. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2653. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2654. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2655. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2656. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2657. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2658. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2659. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2660. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2661. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2662. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2663. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2664. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2665. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2666. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2667. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2668. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2669. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2670. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2671. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2672. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2673. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2674. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2675. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2676. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2677. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2678. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2679. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2680. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2681. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2682. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2683. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2684. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2685. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2686. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2687. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2688. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2689. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2690. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2691. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2692. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2693. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2694. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2695. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2696. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2697. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2698. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2699. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2700. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2701. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2702. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2703. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2704. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2705. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2706. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2707. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2708. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2709. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2710. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2711. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2712. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2713. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2714. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2715. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2716. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2717. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2718. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2719. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2720. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2721. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2722. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2723. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2724. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2725. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2726. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2727. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2728. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2729. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2730. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2731. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2732. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2733. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2734. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2735. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2736. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2737. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2738. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2739. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2740. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2741. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2742. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2743. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2744. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2745. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2746. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2747. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2748. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2749. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2750. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2751. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2752. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2753. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2754. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2755. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2756. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2757. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2758. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2759. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2760. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2761. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2762. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2763. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2764. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2765. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2766. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2767. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2768. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2769. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2770. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2771. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2772. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2773. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2774. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2775. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2776. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2777. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2778. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2779. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2780. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2781. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2782. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2783. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2784. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2785. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2786. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2787. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2788. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2789. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2790. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2791. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2792. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2793. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2794. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2795. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2796. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2797. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2798. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2799. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2800. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2801. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2802. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2803. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2804. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2805. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2806. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2807. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2808. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2809. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2810. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2811. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2812. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2813. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2814. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2815. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2816. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2817. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2818. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2819. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2820. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2821. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2822. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2823. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2824. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2825. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2826. at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_212]
  2827. at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_212]
  2828. at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_212]
  2829. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2830. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2831. at net.minecraft.server.v1_14_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:438) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2832. at net.minecraft.server.v1_14_R1.ChunkProviderServer.runTasks(ChunkProviderServer.java:163) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2833. at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:904) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2834. at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2835. at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:99) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2836. at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:871) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2837. at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [server.jar:git-Spigot-c8d4cef-1fee35b]
  2838. at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
  2839. [11:24:31] [Server thread/ERROR]: Couldn't save chunk; already in use by another instance of Minecraft?
  2840. net.minecraft.server.v1_14_R1.ExceptionWorldConflict: Failed to check session lock for world located at ./world_nether, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
  2841. at net.minecraft.server.v1_14_R1.WorldNBTStorage.checkSession(WorldNBTStorage.java:115) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2842. at net.minecraft.server.v1_14_R1.WorldServer.checkSession(WorldServer.java:1398) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2843. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:559) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2844. at net.minecraft.server.v1_14_R1.PlayerChunkMap.saveChunk(PlayerChunkMap.java:551) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
  2845. at net.minecraft.server.v1_14_R1.PlayerChunkMap.lambda$12(PlayerChunkMap.java:341) ~[server.jar:git-Spigot-c8d4cef-1fee35b]
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