I found #1301 (comment) but for BetterTrims https://github.com/Bawnorton/BetterTrims

Which I think is open source?

relevant line from crash (I think): "EnchantmentHelperMixin from mod bettertrims -> Prepare Injections ->"

I can provide more if needed but the mods I am running make the logs quite unbearable.

For now I will be foregoing BetterTrims (your mod is way more worth it)

Yeah there's a similar issue there. Doesn't appear to exist in their 1.21 branch though (the relevant mixin no longer exists) and I don't know if they have any plans to update 1.20 (Apoth is already done with 1.20 development as well).

The best fix here would be for them to make this mixin also conditional on apotheosis (since it seems they already have some form of conditional mixins setup?).