Fatal error: Uncaught Error: Interface 'OCA\Workflow\PublicAPI\Engine\FlowInterface' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/workflow/lib/Engine/Flow.php:19 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/workflow/lib/Engine/Flow.php on line 19