Fatal error: Uncaught Error: Interface "OCP\Collaboration\Collaborators\ISearchPlugin" not found in /home/tzuovhm/tzuovhm/apps_/spreed/lib/Collaboration/Collaborators/RoomPlugin.php:21 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/spreed/lib/Collaboration/Collaborators/RoomPlugin.php on line 21