I am running cPanel/WHM on Apache server and have just installed an SSL certificate for a single domain. Domain/server is on a fixed dedicated IP address. I'm given the 'successfully installed' message when installing the SSL certificate, however when trying to visit the domain using https, the 500 Internal Server Error message appears:
The server encountered an internal error or misconfiguration and was unable to complete your request.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.