I am encountering a problem I have not experienced before in WP. I have quite a few installations of WP on various sites on my server. However when I went to update something today in the editor section, I got an error message -
An appropriate representation of the requested resource /wp-admin/theme-editor.php could not be found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request
Can anyone explain what might be causing that? I have had WP installations for years on my sites on this same server and never seen that message before. Won't seemingly let me change anything within editor