Fatal error: Uncaught Error: Interface "OCP\Files\External\Config\IAuthMechanismProvider" not found in /users/ms-it/www/oc/lib/private/Files/External/Auth/CoreAuthMechanismProvider.php:30 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/private/Files/External/Auth/CoreAuthMechanismProvider.php on line 30