I have an existing WP site where there is a custom post type called Author with a few hundred entries. I need to create a single entry page from these authors, but single-author.php just returns a 404. I know Author is a reserved keyword in WP and it shouldn't be used for custom post type names. Both WP user single entry page and custom post type author is redirecting to /author/nicename slug and both just return 404. I am not able to change the custom post type name unfortunately. Is there a work around this?