Plesk

Domain in Plesk shows 500 internal server error: Invalid command, perhaps misspelled or defined by a module not included in the server configuration

Symptoms

Cause

Website's .htaccess file contains a directive that is not supported or is incorrect.

Resolution

  1. Log into Plesk

  2. Navigate to Domains > example.com > File Manager, open .htaccess file and comment out the lines beginning with php_value by prepending a # character