all routes are registered on the root of the host, and the "reverse
proxy subfolder". When using Reverse proxy subfolder "/accounts", and
the default URL Path for the Admin page of "/" (a.k.a. ""), a route
collision occurs that for some reason wasn't dealt with before. This is
avoided by checking before registering the second route, and a panic
recovery handler has been added telling the user off for using bad
subpaths if any others occur.