Fatal error: Uncaught Error: Class "Wikimedia\Parsoid\Wt2Html\PipelineStage" not found in /var/www/html/w/vendor/wikimedia/parsoid/src/Wt2Html/DOMProcessorPipeline.php:21 Stack trace: #0 {main} thrown in /var/www/html/w/vendor/wikimedia/parsoid/src/Wt2Html/DOMProcessorPipeline.php on line 21