Causes

There are, of course, lots of causes for a 500 error. Most often, this error originitates from a poor configuration of a .htaccess file i.e configurations in the file are not compatible with settings on the server on which your Drupal website has been installed. php.ini, htpasswd files that are wrecked are also possible causes of this famous problem. However, breathe! Most of the time, this problem can be fixed by doing a little bit of work in your .htaccess file