The first order of the day was a custom 404 page. This also tests the use of a .htaccess (a configuration file for use on web servers running the Apache Web Server software) I need to see if I can get .htaccess files to control the behviour of protected directories.
Custom error pages
This is a topic that I covered in detail on temusfugit.ca
I managed to get this to work pretty well on my own Linux webserver but I am currently of the opinion that there is a problem with the Plesk Control Panel with repect to "Let's Encrypt". This seems to be confirmed on the HostingUK support blog.