[01:09:13] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.server.v1_7_R4.ReportedException: Exception ticking world entities
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:717) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437) ~[?:1.8.0_101]
	at java.util.HashMap$KeyIterator.next(HashMap.java:1461) ~[?:1.8.0_101]
	at net.minecraft.server.v1_7_R4.World.tickEntities(World.java:1504) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.WorldServer.tickEntities(WorldServer.java:516) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:706) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	... 4 more
[01:09:13] [Server thread/ERROR]: 	Cause of unexpected exception was
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437) ~[?:1.8.0_101]
	at java.util.HashMap$KeyIterator.next(HashMap.java:1461) ~[?:1.8.0_101]
	at net.minecraft.server.v1_7_R4.World.tickEntities(World.java:1504) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.WorldServer.tickEntities(WorldServer.java:516) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:706) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
[01:09:13] [Server thread/ERROR]: This crash report has been saved to: /home/bloodypvp/./crash-reports/crash-2017-02-11_01.09.13-server.txt
[01:09:13] [Server thread/INFO]: Stopping server