same man idk how to fix it

same here

its caused for me atleast by having the enhanced player model selector installed or any mod that ♥♥♥♥♥ with player models disable that and you should be fine

How to disable it, it happens to me too, Sukuna doesn't do the pose, I don't know what's happening, how to fix it, I hope the creators of the mod fix it or it must be a bug and that they make a tutorial

not a bug, dont use other mods that can break animations or player model changer