Can't pack avatar, Marrow Project Validation button doesn't work

[Potatoified]

I can't pack my avatar as a mod at all, because this window pops up and tells me that I need to fix the addressable settings. I pressed fix all and fix multiple times and nothing works at all
I'm using the extended SDK on the correct Unity and this is the first time this has happened.
I can't pack anything else either so it's nothing to do with the avatar.