So, I've been testing Origins in Fabric + a bunch of world-generation mods and, apparently, a mod called "Great Big World" seems to crash the game on startup when Origins (Fabric) is enabled in 1.20.1.

The crash log: crash log.txt

Dependencies of the Great Big World are Creo Lib, YetAnotherConfigLib and Mod Menu.
Tell me to delete if it has been posted already.

This looks more like an incompatibility issue with Creo Lib and Reach Entity Attributes, which Origins uses. I suggest posting an issue in their respective repositories