Fatal error: Uncaught Error: Interface "MediaWiki\Page\Hook\ArticlePurgeHook" not found in /var/www/html/w/extensions/SemanticMediaWiki/src/MediaWiki/Hooks/ArticlePurge.php:27 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/SemanticMediaWiki/src/MediaWiki/Hooks/ArticlePurge.php on line 27