Tools like Perfmatters can toggle off the wlwmanifest link in your site's header.
WordPress continues to include this file for backward compatibility, although it is virtually unused by modern bloggers. Common Actions to Take {keyword}/shop/wp-includes/wlwmanifest.xml
Requests for the path .../shop/wp-includes/wlwmanifest.xml typically appear in your server access logs because of: Tools like Perfmatters can toggle off the wlwmanifest
If you are running WordPress, you may choose to remove the header link or the file for security through obscurity: you can safely ignore them
If you are seeing 404 errors for this file on a non-WordPress site, you can safely ignore them; it just means a bot guessed incorrectly that you were using WordPress.