When I attached a comment takes me to https://cakikeencasa.com/wp-comments-post.

I have tried several options to fix it, but nothing seems to work.
I uploaded and active the plugin in. I make a restriction of 10mb and play around the settings. But as soon as I clicked the “Publish my comment” button, it takes me to a 404 error https://cakikeencasa.com/wp-comments-post.php it doesn’t find that address.

When I tried to make a comment without the attached file and it does work. So I guess is the uploading process that is failing. Thank you for all your help.

The page I need help with: [log in to see the link]