---- Minecraft Crash Report ----
// I feel sad now :(

Time: 4/20/17 12:17 PM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -1
	at java.util.Arrays$ArrayList.get(Arrays.java:3841)
	at eq.get(SourceFile:40)
	at add.a(SourceFile:567)
	at add.a(SourceFile:368)
	at afi.b(SourceFile:111)
	at ade.U(SourceFile:1275)
	at als.e(SourceFile:978)
	at on.e(SourceFile:353)
	at oc.a(SourceFile:748)
	at gd.l(SourceFile:379)
	at ob.c(SourceFile:215)
	at net.minecraft.server.MinecraftServer.D(SourceFile:652)
	at nb.D(SourceFile:335)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)


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

-- System Details --
Details:
	Minecraft Version: 17w16a
	Operating System: Linux (amd64) version 4.4.0-72-generic
	Java Version: 1.8.0_121, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 2586003592 bytes (2466 MB) / 2877292544 bytes (2744 MB) up to 2877292544 bytes (2744 MB)
	JVM Flags: 2 total; -Xmx3G -Xms2G
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 20; [ns['Cuth71'/55, l='world', x=-1143.74, y=63.00, z=2177.35]]
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)