Incorrectly Rigged Model?

I have exactly zero experience rigging models, I'm trying to set up animations on an asset I purchased from the marketplace that looks like it was rigged incorrectly and I don't know how to fix it.

Here is the model in question, something with the hips root is wrong according to Unity.

https://gofile.io/?t=uploadFiles

Thanks for any input

 

I think the link address is wrong. If you want to solve it yourself you should give more info on the error and such (like copying the error an context). But ultimately it's really something you should ask to the person that sold you the model.