---- Minecraft Crash Report ----
// Sorry :(

Time: 18-2-22 下午12:36
Description: Ticking entity

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1461)
	at net.minecraft.entity.EntityLivingBase.func_70679_bo(EntityLivingBase.java:591)
	at net.minecraft.entity.EntityLivingBase.func_70030_z(EntityLivingBase.java:332)
	at net.minecraft.entity.EntityLiving.func_70030_z(EntityLiving.java:164)
	at net.minecraft.entity.Entity.func_70071_h_(Entity.java:409)
	at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1848)
	at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:213)
	at net.minecraft.entity.monster.EntityMob.func_70071_h_(EntityMob.java:41)
	at net.minecraft.world.World.func_72866_a(World.java:2674)
	at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:800)
	at net.minecraft.world.World.func_72870_g(World.java:2623)
	at net.minecraft.world.World.func_72939_s(World.java:2423)
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:633)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:954)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:431)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:809)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:669)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1461)
	at net.minecraft.entity.EntityLivingBase.func_70679_bo(EntityLivingBase.java:591)
	at net.minecraft.entity.EntityLivingBase.func_70030_z(EntityLivingBase.java:332)
	at net.minecraft.entity.EntityLiving.func_70030_z(EntityLiving.java:164)
	at net.minecraft.entity.Entity.func_70071_h_(Entity.java:409)
	at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1848)
	at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:213)
	at net.minecraft.entity.monster.EntityMob.func_70071_h_(EntityMob.java:41)
	at net.minecraft.world.World.func_72866_a(World.java:2674)
	at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:800)
	at net.minecraft.world.World.func_72870_g(World.java:2623)

-- Entity being ticked --
Details:
	Entity Type: Witch (net.minecraft.entity.monster.EntityWitch)
	Entity ID: 50965
	Entity Name: Witch
	Entity's Exact location: -961.95, 65.05, -265.30
	Entity's Block location: World: (-962,65,-266), Chunk: (at 14,4,6 in -61,-17; contains blocks -976,0,-272 to -961,255,-257), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
	Entity's Momentum: -0.05, -0.07, 0.08
Stacktrace:
	at net.minecraft.world.World.func_72939_s(World.java:2423)
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:633)

-- Affected level --
Details:
	Level name: plotworld
	All players: 18 total; [EntityPlayerMP['Sky_Tong'/404, l='plotworld', x=528.69, y=65.50, z=75.17](Sky_Tong at 528.6937231278795,65.5,75.1720431282335), EntityPlayerMP['QQ2560521275'/458, l='plotworld', x=-459.29, y=65.00, z=-627.27](QQ2560521275 at -459.2910438436506,65.0,-627.2716710603933), EntityPlayerMP['HKpanda233'/628, l='plotworld', x=112.39, y=65.00, z=231.31](HKpanda233 at 112.39117672310871,65.0,231.31348633272333), EntityPlayerMP['Chic_bingchen'/839, l='plotworld', x=171.91, y=65.00, z=-538.17](Chic_bingchen at 171.91117019196838,65.0,-538.1733868060386), EntityPlayerMP['HaiMian__BaoBao'/1230, l='plotworld', x=-700.76, y=65.00, z=511.21](HaiMian__BaoBao at -700.7584455354146,65.0,511.20549816769733), EntityPlayerMP['RH_AR15'/1449, l='plotworld', x=-719.76, y=65.88, z=-418.13](RH_AR15 at -719.7591916473901,65.875,-418.12665554118547), EntityPlayerMP['login999'/819, l='plotworld', x=-455.68, y=66.00, z=-629.37](login999 at -455.67500001192093,66.0,-629.3691642950288), EntityPlayerMP['yali'/361, l='plotworld', x=-462.29, y=66.17, z=-616.82](yali at -462.2889879480634,66.1707870772188,-616.8153503602639), EntityPlayerMP['Ma_Chao_666'/1437, l='plotworld', x=-510.30, y=65.00, z=381.92](Ma_Chao_666 at -510.2986328542712,65.0,381.92108323956796), EntityPlayerMP['zhijian'/3527, l='plotworld', x=38.47, y=65.00, z=446.86](zhijian at 38.46573922839489,65.0,446.85533218929044), EntityPlayerMP['yuyu'/3020, l='plotworld', x=42.54, y=65.42, z=438.89](yuyu at 42.54081261351023,65.42159999847412,438.89043549214927), EntityPlayerMP['Kine_G'/17526, l='plotworld', x=43.70, y=54.00, z=-327.02](Kine_G at 43.69999998807907,54.0,-327.0174110091885), EntityPlayerMP['Chic_54yz'/27664, l='plotworld', x=165.34, y=65.00, z=-457.34](Chic_54yz at 165.3428748890199,65.0,-457.3357840164127), EntityPlayerMP['Original_sin'/14234, l='plotworld', x=251.87, y=65.00, z=-276.30](Original_sin at 251.86987029117822,65.0,-276.30000001192093), EntityPlayerMP['F_Yasuo'/34568, l='plotworld', x=-1883.55, y=65.00, z=-129.70](F_Yasuo at -1883.5544958805147,65.0,-129.69999997951163), EntityPlayerMP['baolong666'/49059, l='plotworld', x=-462.06, y=65.13, z=-623.25](baolong666 at -462.06124589670367,65.125,-623.2462786191918), EntityPlayerMP['Gold_MT'/50723, l='plotworld', x=-954.63, y=65.80, z=-255.64](Gold_MT at -954.6319292892705,65.80000000000001,-255.63805875183772), EntityPlayerMP['6832918'/15851, l='plotworld', x=174.50, y=66.00, z=-539.50](6832918 at 174.5,66.0,-539.5)]
	Chunk stats: ServerChunkCache: 740 Drop: 0
	Level seed: -8576170301543809758
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options:
	Level spawn location: World: (3,66,3), Chunk: (at 3,4,3 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 16657115 game time, 16699839 day time
	Level dimension: 4
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 9791 (now: false), thunder time: 39483 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:954)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:431)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:809)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:669)
	at java.lang.Thread.run(Thread.java:745)