2019-07-14 18:07:44 [SEVERE] Exception in thread "Timer-15" java.util.ConcurrentModificationException

2019-07-14 18:07:44 [SEVERE] 	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442)

2019-07-14 18:07:44 [SEVERE] 	at java.util.HashMap$KeyIterator.next(HashMap.java:1466)

2019-07-14 18:07:44 [SEVERE] 	at net.minecraft.entity.EntityTrackerEntry.func_73120_a(EntityTrackerEntry.java:388)

2019-07-14 18:07:44 [SEVERE] 	at net.minecraft.entity.EntityTrackerEntry.func_73116_b(EntityTrackerEntry.java:398)

2019-07-14 18:07:44 [SEVERE] 	at net.minecraft.entity.EntityTracker.func_72789_b(EntityTracker.java:231)

2019-07-14 18:07:44 [SEVERE] 	at su.mellgrief.mcustom.containers.CustomizationInventory.func_70296_d(CustomizationInventory.java:98)

2019-07-14 18:07:44 [SEVERE] 	at ru.zoom4ikdan4ik.tasks.HandlerTask.run(HandlerTask.java:23)

2019-07-14 18:07:44 [SEVERE] 	at java.util.TimerThread.mainLoop(Timer.java:555)

2019-07-14 18:07:44 [SEVERE] 	at java.util.TimerThread.run(Timer.java:505)

2019-07-14 18:08:57 [SEVERE] java.lang.NoSuchMethodError: com.mojang.authlib.yggdrasil.LegacyBridge.searchProfile(Ljava/lang/String;)Z

2019-07-14 18:08:57 [SEVERE] 	at net.minecraft.network.TcpConnection.func_74447_i(TcpConnection.java:314)

2019-07-14 18:08:57 [SEVERE] 	at net.minecraft.network.TcpConnection.func_74450_c(TcpConnection.java:505)

2019-07-14 18:08:57 [SEVERE] 	at net.minecraft.network.TcpReaderThread.run(TcpReaderThread.java:21)