Fatal error: Uncaught Error: Class "OCP\AppFramework\Http\Response" not found in /usr/local/www/owncloud/apps/templateeditor/lib/Http/MailTemplateResponse.php:32 Stack trace: #0 {main} thrown in /usr/local/www/owncloud/apps/templateeditor/lib/Http/MailTemplateResponse.php on line 32