Your copy of archive-product.php is incomplete, notice the PHP comment at the end that talks about something, but the comment is cut off and never gets closed, and the thing it talks about never appears? Deleting the copied file will unbreak your site.
Then copy it again in full. Ideally, do it via filesystem copy, e.g. right click copy and paste on the file, rather than opening the file and copying its contents in a text editor.