Fatal error: Uncaught Error: Interface "OCA\Circles\IFederatedItem" not found in /home/tzuovhm/tzuovhm/apps_/circles/lib/FederatedItems/LoopbackTest.php:25 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/circles/lib/FederatedItems/LoopbackTest.php on line 25