[22:37:44] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.server.v1_13_R2.ReportedException: Ticking player
	at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:983) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:835) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:733) [spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at java.lang.Thread.run(Thread.java:813) [?:1.8.0_192]
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445) ~[?:1.8.0_192]
	at java.util.HashMap$KeyIterator.next(HashMap.java:1469) ~[?:1.8.0_192]
	at net.minecraft.server.v1_13_R2.NBTTagCompound.clone(SourceFile:394) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.ItemStack.cloneItemStack(ItemStack.java:447) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.Container.b(Container.java:79) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.EntityPlayer.tick(EntityPlayer.java:337) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.World.entityJoinedWorld(World.java:1380) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.World.g(World.java:1347) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.WorldServer.p_(WorldServer.java:624) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.World.tickEntities(World.java:1149) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.WorldServer.tickEntities(WorldServer.java:601) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:972) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	... 4 more
[22:37:44] [Server thread/ERROR]: 	Cause of unexpected exception was
java.util.ConcurrentModificationException: null
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445) ~[?:1.8.0_192]
	at java.util.HashMap$KeyIterator.next(HashMap.java:1469) ~[?:1.8.0_192]
	at net.minecraft.server.v1_13_R2.NBTTagCompound.clone(SourceFile:394) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.ItemStack.cloneItemStack(ItemStack.java:447) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.Container.b(Container.java:79) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.EntityPlayer.tick(EntityPlayer.java:337) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.World.entityJoinedWorld(World.java:1380) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.World.g(World.java:1347) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.WorldServer.p_(WorldServer.java:624) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.World.tickEntities(World.java:1149) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.WorldServer.tickEntities(WorldServer.java:601) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:972) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:835) ~[spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:733) [spigot-1.13.2.jar:git-Spigot-e4d0c66-f3f2fe5]
	at java.lang.Thread.run(Thread.java:813) [?:1.8.0_192]
[22:37:44] [Server thread/ERROR]: This crash report has been saved to: /home/gs-40096/./crash-reports/crash-2019-01-19_22.37.44-server.txt