Avatar model isn't being detected by Studio avatar setup

I have uploaded several models to the marketplace from scratch before so I am familiar with the overall process of avatar creation, however, there is plenty I don’t understand still. I have used the avatar setup tool to help me create most things before uploading.

With the newest avatar though the Avatar Setup tool isn’t detecting it as anything and normally would get it ready to test accessories but this time I can’t figure out what is wrong because I get no direct warnings while uploading the avatar

When I do the validation in the save to Roblox step, it gives me this list of issues. I know how to fix most of them, but I don’t know which one is the main issue I need to fix first. Are there any resources talking about the rig points and their required positions?