Fatal error: Uncaught Error: Class "MediaWiki\OutputTransform\ContentDOMTransformStage" not found in /var/www/html/w/tests/phpunit/includes/OutputTransform/DummyDOMTransformStage.php:11 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/includes/OutputTransform/DummyDOMTransformStage.php on line 11