Fatal error: Uncaught Error: Class "MediaWiki\OutputTransform\ContentTextTransformStage" not found in /var/www/html/w/includes/OutputTransform/Stages/AddWrapperDivClass.php:19 Stack trace: #0 {main} thrown in /var/www/html/w/includes/OutputTransform/Stages/AddWrapperDivClass.php on line 19