Fatal error: Uncaught Error: Class "OCA\Circles\Exceptions\FederatedItemConflictException" not found in /var/www/html/nextcloud/apps/circles/lib/Exceptions/FederatedEventDSyncException.php:16 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/circles/lib/Exceptions/FederatedEventDSyncException.php on line 16