Fatal error: Uncaught Error: Class "OC\Core\Command\Base" not found in /home/tzuovhm/tzuovhm/apps_/spreed/lib/Command/Room/Promote.php:20 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/spreed/lib/Command/Room/Promote.php on line 20