Fatal error: Uncaught Error: Class "OCP\AppFramework\Middleware" not found in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/AppFramework/Middleware/OCSMiddleware.php:42 Stack trace: #0 {main} thrown in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/AppFramework/Middleware/OCSMiddleware.php on line 42