Issue Description: game crashes

crash.report:crash-2020-05-03_23.59.21-client.txt

What happens:

when the worldchunks load in a world the world closes it sais saving world and then the game crashes.

What you expected to happen:

Steps to reproduce:

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Affected Versions (Do not use "latest"):

• Hwyla:Hwyla-fabric-20w13b-1.9.22-73.jar
• Minecraft: fabric-loader-0.8.2+build.194-20w18a
• Forge: none

Possible Conflicting Mods (Provide their version, as well)

(maybe update the mod to the latest version)