---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 09.11.17 23:43
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at bh$b.a(SourceFile:84)
	at mk$a.a(SourceFile:152)
	at mk.a(SourceFile:98)
	at mk.M_(SourceFile:74)
	at net.minecraft.server.MinecraftServer.w(SourceFile:678)
	at net.minecraft.server.MinecraftServer.v(SourceFile:584)
	at ciz.v(SourceFile:149)
	at net.minecraft.server.MinecraftServer.run(SourceFile:489)
	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: 17w45a
	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: 102909024 bytes (98 MB) / 301989888 bytes (288 MB) up to 1073741824 bytes (1024 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [pq['Somin'/1, l='1v1 PvP - WIP', x=8,57, y=65,00, z=6,39]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.