---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 10/12/17 9:34 PM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: 256
	at ayz.<init>(SourceFile:91)
	at aym.c(SourceFile:71)
	at oo.n(SourceFile:741)
	at oo.<init>(SourceFile:130)
	at chd.a(SourceFile:98)
	at chd.j(SourceFile:130)
	at net.minecraft.server.MinecraftServer.run(SourceFile:434)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.12.2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 540182880 bytes (515 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.