---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 7/25/18 9:56 PM
Description: Exception ticking world entities

java.lang.ArrayIndexOutOfBoundsException: -1
	at it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet.fixPointers(ObjectLinkedOpenHashSet.java:816)
	at it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet.removeEntry(ObjectLinkedOpenHashSet.java:485)
	at it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet.rem(ObjectLinkedOpenHashSet.java:514)
	at it.unimi.dsi.fastutil.objects.AbstractObjectCollection.remove(AbstractObjectCollection.java:145)
	at it.unimi.dsi.fastutil.objects.AbstractObjectCollection.removeAll(AbstractObjectCollection.java:210)
	at axu.l(SourceFile:1068)
	at tc.l(SourceFile:493)
	at net.minecraft.server.MinecraftServer.b(SourceFile:736)
	at net.minecraft.server.MinecraftServer.a(SourceFile:661)
	at dfz.a(SourceFile:158)
	at net.minecraft.server.MinecraftServer.run(SourceFile:564)
	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 --
Thread: Server thread
Stacktrace:
	at it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet.fixPointers(ObjectLinkedOpenHashSet.java:816)
	at it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet.removeEntry(ObjectLinkedOpenHashSet.java:485)
	at it.unimi.dsi.fastutil.objects.ObjectLinkedOpenHashSet.rem(ObjectLinkedOpenHashSet.java:514)
	at it.unimi.dsi.fastutil.objects.AbstractObjectCollection.remove(AbstractObjectCollection.java:145)
	at it.unimi.dsi.fastutil.objects.AbstractObjectCollection.removeAll(AbstractObjectCollection.java:210)
	at axu.l(SourceFile:1068)
	at tc.l(SourceFile:493)

-- Affected level --
Details:
	Level name: Zxaphea2
	All players: 1 total; [te['Zxaphe'/520, l='Zxaphea2', x=925.20, y=72.18, z=526.18]]
	Chunk stats: ServerChunkCache: 617 Drop: 0
	Level seed: 6035820794084780985
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (164,64,212), Chunk: (at 4,4,4 in 10,13; contains blocks 160,0,208 to 175,255,223), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 13426580 game time, 20076331 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 146445 (now: false), thunder time: 21613 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:736)
	at net.minecraft.server.MinecraftServer.a(SourceFile:661)
	at dfz.a(SourceFile:158)
	at net.minecraft.server.MinecraftServer.run(SourceFile:564)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 18w30a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 473898304 bytes (451 MB) / 939524096 bytes (896 MB) up to 1073741824 bytes (1024 MB)
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [te['Zxaphe'/520, l='Zxaphea2', x=925.20, y=72.18, z=526.18]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.