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

Time: 6/5/20 10:28 AM
Description: Exception in server tick loop

java.lang.IllegalStateException: Unregistered dimension type: cic@27c9672
	at net.minecraft.server.MinecraftServer.a(SourceFile:407)
	at java.util.Optional.orElseThrow(Optional.java:290)
	at net.minecraft.server.MinecraftServer.a(SourceFile:407)
	at net.minecraft.server.MinecraftServer.l_(SourceFile:334)
	at yd.d(SourceFile:175)
	at net.minecraft.server.MinecraftServer.v(SourceFile:646)
	at net.minecraft.server.MinecraftServer.a(SourceFile:256)
	at java.lang.Thread.run(Thread.java:748)


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: 1.16 Pre-release 2
	Minecraft Version ID: 1.16-pre2
	Operating System: Linux (amd64) version 5.4.42-1-lts
	Java Version: 1.8.0_242, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 12491575776 bytes (11912 MB) / 16464216064 bytes (15701 MB) up to 16464216064 bytes (15701 MB)
	CPUs: 4
	JVM Flags: 2 total; -Xms16G -Xmx16G
	Player Count: 0 / 50; []
	Data Packs: vanilla, file/frivycat_datapack, file/multiplayer sleep v1.0.1 (incompatible)
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)