Fatal error: Uncaught Error: Interface 'OCP\UserInterface' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/user_shibboleth/lib/userbackend.php:36 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/user_shibboleth/lib/userbackend.php on line 36