Fatal error: Uncaught Error: Class 'OCP\AppFramework\Middleware' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/federation/lib/Middleware/AddServerMiddleware.php:33 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/federation/lib/Middleware/AddServerMiddleware.php on line 33