Fatal error: Uncaught Error: Class "humhub\widgets\ModalDialog" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/topic/views/content-topic/edit.php:21 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/topic/views/content-topic/edit.php on line 21