Hey there and thanks for the mod!

In combination with other mods it seems this mod causes some crashes (without error messages - such a pain to figure out.)

See: MiraculixxT/Veinminer#29

@MiraculixxT suggests to rebuild a version of the mod with an up to date fabric-permission-api.

fabric-permissions-api 0.3.3 does not work on 1.21.1! You need to use 0.3.1 there, as it will crash when certain methods are called (it's issue in 0.3.3 implementation being only compatible with newer mc versions)