Fatal error: Uncaught Error: Interface "OCP\OCS\IDiscoveryService" not found in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/OCS/DiscoveryService.php:39 Stack trace: #0 {main} thrown in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/OCS/DiscoveryService.php on line 39