Content aware fill not working
(AE 2021) trying to content aware fill a subject out of this footage but all it does id generate a fill layer that completely empty, practically useless. Ive watch many tutorials and I follow their instructions exactly yet i get the same error. I've also tried an older version of AE and it still doesn't work. I've only seen one other person online with this issue and that question is unanswered. I'd appreciate if I could get some help.
Heres some before and after images, as you can see the fill layer is there but its a png for some reason and it does absolutely nothing


