Thanks for showing me that. It looks like it’s some custom error pages for Apache httpd. If I ever had to make my error pages for it look nicer I might use it, though I always have just left them as default.
I don’t think I would add them to MDS though as that would assume people are using Apache httpd which obviously is not always the case. I don’t know if anything in the script already assumes that but I would like to not assume that for the WP version to allow for running on other web server software such as nginx or lighttpd, etc. which I can hopefully get time to test on.