Fatal error: Uncaught Error: Class "OCP\AppFramework\Middleware" not found in /users/ms-it/www/oc/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php:61 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php on line 61