Fatal error: Uncaught Error: Class "OCP\BackgroundJob\TimedJob" not found in /home/tzuovhm/tzuovhm/nextcloud/apps/activity/lib/BackgroundJob/EmailNotification.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/nextcloud/apps/activity/lib/BackgroundJob/EmailNotification.php on line 18