Reviews Submit get 404 Error if Photo Attached

If a photo is included with the review, it redirects to this URL and says “page not found”
https://ticbagtoe.com/wp-comments-post.php

I saw another thread in which support says the problem is photo size, but it’s doing this with pictures of any size — even under 1000px and 100kb.

This happens on the product page https://ticbagtoe.com/product/ticbagtoe/ and reviews page where form is inserted with shortcode at https://ticbagtoe.com/reviews