[MC-133653] Game Crash when creating Superflat world (Void), entering the End, or creating floating islands buffet world

Step to reproduce.

Creating Superflat World (I've only tested with Void type.)
and the game suddenly crashed.

It also happen with the old world (pre-8 and below.)

Description: Exception ticking world

java.lang.IllegalArgumentException: bound must be positive
	at java.util.Random.nextInt(Unknown Source)
	at axz.a(SourceFile:196)
	at axz.a(SourceFile:98)
	at tc.i_(SourceFile:196)
	at net.minecraft.server.MinecraftServer.w(SourceFile:690)
	at net.minecraft.server.MinecraftServer.v(SourceFile:623)
	at dft.v(SourceFile:157)
	at net.minecraft.server.MinecraftServer.run(SourceFile:526)
	at java.lang.Thread.run(Unknown Source)

This seems to be related to MobSpawning.
A Temporary fix is using a programm like https://irath96.github.io/webNBT/ to edit the level.dat, and set the gamerule "doMobSpawning" to "false".

— HurricanKai