---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 19.05.18 12:23
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at bbx.a(SourceFile:479)
	at bqx.g(SourceFile:85)
	at bqx.<init>(SourceFile:60)
	at bpk$$Lambda$873/394312725.create(Unknown Source)
	at bpk.create(SourceFile:50)
	at bqn.n(SourceFile:81)
	at sk.p(SourceFile:598)
	at sk.<init>(SourceFile:131)
	at dhr.a(SourceFile:97)
	at dhr.d(SourceFile:132)
	at net.minecraft.server.MinecraftServer.run(SourceFile:502)
	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: 18w20c
	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: 193768536 bytes (184 MB) / 419430400 bytes (400 MB) up to 4294967296 bytes (4096 MB)
	JVM Flags: 7 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.