I have a domain, and I created a subdomain "en" pointing to the root directory (where the Wordpress's index.php is located) like was mentioned in the documentation. But when I access the subdomain or click on the "English" link from the widget to translate, it's redirected to the subdomain with an error page "500 Internal Server Error. The server encountered an internal error or misconfiguration and was unable to complete your request."
Could you help me, please?