I have a new Wordpress installation which works perfectly on localhost
However, the live version has an issue with TinyMCE
https://toytrainland.com/wp-includes/js/tinymce/wp-tinymce.php
Comes up with a 404 error. however, the file is on the server
How can I fix this?
It may be file permission issue, check your files should having 644 permission and all directories have 755 permission.