Fatal error: Uncaught Error: Class "MediaWiki\Rest\SimpleHandler" not found in /var/www/html/w/extensions/Wikibase/repo/domains/crud/src/RouteHandlers/GetItemDescriptionsRouteHandler.php:28 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/Wikibase/repo/domains/crud/src/RouteHandlers/GetItemDescriptionsRouteHandler.php on line 28