Crash on server start due to mixin.minimal_nonvanilla.spawning

[Avakining]

Version

lithium-fabric-0.15.0+mc1.21.4.jar

Reproduction Steps

1. Update Lithium to 0.15.0
2. Try to start server
3. Server crashes due to Exception ticking world and java.lang.NullPointerException

Crash Report File

Crash report

Minecraft Save

Unknown minimal conditions

Additional Information

Crash does not occur when mixin.minimal_nonvanilla.spawning = false is put in Lithium's config

[2No2Name]

This can only be explained by a mod compatibility issue. It is hard to tell which mod affects it, so you could try with half of your mods at a time to narrow it down, if you have time and dedication.