Fatal error: Uncaught Error: Class "OCA\Circles\Exceptions\FederatedItemException" not found in /var/www/html/nextcloud/apps/circles/lib/Exceptions/FederatedItemConflictException.php:21 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/circles/lib/Exceptions/FederatedItemConflictException.php on line 21