Fatal error: Uncaught Error: Class "SMW\MediaWiki\Api\Tasks\Task" not found in /var/www/html/extensions/SemanticMediaWiki/src/MediaWiki/Api/Tasks/TableStatisticsTask.php:15 Stack trace: #0 {main} thrown in /var/www/html/extensions/SemanticMediaWiki/src/MediaWiki/Api/Tasks/TableStatisticsTask.php on line 15