Fatal error: Uncaught Error: Class "OCP\AppFramework\Http\Response" not found in /users/ms-it/www/oc/apps-external/richdocuments/lib/Http/DownloadResponse.php:19 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/apps-external/richdocuments/lib/Http/DownloadResponse.php on line 19