What is wrong with my player model?

It gives me this error when I import:
2021-01-31 13_23_39-Tower Unite
But, I have a root bone:
2021-01-31 13_26_22-Tower Unite

What the hell is going on?

Download: https://drive.google.com/file/d/15DvZK1igmR7UvAkV2ZRhtnWeawjn-yXo/view?usp=sharing

You have to have the model rigged to the Tower Unite rig, found here:

Ok, now it is just teasing me: image