---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 1/3/18 2:47 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at hk.hashCode(SourceFile:121)
	at java.util.HashMap.hash(Unknown Source)
	at java.util.HashMap.remove(Unknown Source)
	at bjy.a(SourceFile:143)
	at rr.a(SourceFile:168)
	at rk.a(SourceFile:202)
	at net.minecraft.server.MinecraftServer.w(SourceFile:687)
	at qy.w(SourceFile:352)
	at net.minecraft.server.MinecraftServer.v(SourceFile:604)
	at net.minecraft.server.MinecraftServer.run(SourceFile:509)
	at java.lang.Thread.run(Unknown Source)


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: 18w01a
	Operating System: Linux (amd64) version 3.10.0-327.4.5.el7.x86_64
	Java Version: 1.8.0_65, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 127413728 bytes (121 MB) / 393154560 bytes (374 MB) up to 3113877504 bytes (2969 MB)
	JVM Flags: 8 total; -Xms256M -Xmx3072M -XX:MaxPermSize=256M -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:+CMSClassUnloadingEnabled -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 2 / 20; [rp['TextComponent{text='Grand3', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}'/60, l='world', x=-677.50, y=60.50, z=-893.98], rp['TextComponent{text='Winderlies', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}'/562, l='world', x=-263.23, y=67.00, z=638.74]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)