@TheDarkLord
I don't know what else to advise you, my steps below:
I created a new Unity 2022 Avatar Project through VCC,
imported the
Kanna Zy0n7 2023 physbones.unitypackage file,
opened the scene file located at
Assets\[MODELS]\Kanna Zy0n7\SCENE Kanna Zy0n7.unity,
uploaded the avatar.