Symptoms
When using mod_userdir to access sites via IP address and username, the site displays one of the following errors.
Not Supported
501 Not Implemented
Description
The error occurs when the site uses a PHP handler that doesn't support the Apache mod_userdir module. The CGI, FastCGI, or PHP-FPM PHP handlers do not support this module.
Workaround
Use a different PHP handler, such as LSAPI or suPHP.