Hi, This is just a minor suggestion, but when the error: No ability to generate random in Drupal\Driver\BlackboxDriver. Put @api into your feature and add an API driver (ex:api_driver: drupal) in behat.yml. (Drupal\Driver\Exception\UnsupportedDriverActionException) is thrown, it would be much appreciated if the url for the documentation page(https://behat-drupal-extension.readthedocs.io/en/3.1/drush.html) is provided if possible as a reference.