Problem: The client has a custom post type "película" in a multilingual website with Spanish as the primary language. They encounter a 404 error on the front end when the URL slug of a movie post is changed in a non-Spanish language, even though there is no error in the back end. Solution: We recommend checking the custom post type configuration to ensure that it allows for the same slug to be used across translations. If the configuration does not permit this, it could be the reason why a 404 error occurs when the same slug is used.
