Crash on join world when loading unearthed with wildworld,
crash WW+UE.txt

with the little knowledge i have and some research it looks like wild world might be to blame
https://bitbucket.org/andre111/wildnature/issues/4/wild-worlds-has-unregistered

Closing this, if issue persists in latest version, reopen this. https://www.curseforge.com/minecraft/mc-mods/unearthed-fabric/files/3196531