Fatal error: Uncaught Error: Class "OCP\EventDispatcher\Event" not found in /home/tzuovhm/tzuovhm/apps/federatedfilesharing/lib/Events/FederatedShareAddedEvent.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps/federatedfilesharing/lib/Events/FederatedShareAddedEvent.php on line 18