Fatal error: Uncaught Error: Class "humhub\widgets\Button" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/admin/widgets/views/installed-module-controls.php:14 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/admin/widgets/views/installed-module-controls.php on line 14