Fatal error: Uncaught Error: Class "OCA\DAV\CalDAV\Reminder\NotificationProvider\AbstractProvider" not found in /home/tzuovhm/tzuovhm/nextcloud/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php:31 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/nextcloud/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php on line 31