Fatal error: Uncaught Error: Class "Wikimedia\Rdbms\JoinGroupBase" not found in /var/www/html/orian-wiki/includes/libs/rdbms/querybuilder/JoinGroup.php:9
Stack trace:
#0 {main}
thrown in /var/www/html/orian-wiki/includes/libs/rdbms/querybuilder/JoinGroup.php on line 9