this a general error for hosted sites mostly in cpanel based sites
error seems like this
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, firstname.lastname@example.org and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
this is due to mis configuration regardiing .htaccess file
Solution is simple
1. Rename the file to any name like ‘htacess_1
3. create a blank .htaccess file there
3. try reloading , if not delete the current file and rename the previous one to .htaccess