---- Minecraft Crash Report ----
// Don't do that.

Time: 2/15/18 6:15 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at aug.a(SourceFile:375)
	at bih.e(SourceFile:58)
	at bih.<init>(SourceFile:44)
	at bhx.o(SourceFile:46)
	at rx.o(SourceFile:719)
	at rx.<init>(SourceFile:127)
	at cvz.a(SourceFile:96)
	at cvz.d(SourceFile:131)
	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: 18w07b
	Operating System: Mac OS X (x86_64) version 10.13.2
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 167885216 bytes (160 MB) / 268435456 bytes (256 MB) up to 2147483648 bytes (2048 MB)
	JVM Flags: 7 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	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.