Fatal error: Uncaught Error: Class "Yii" not found in /users/quirl/www/filemanager/spark/protected/humhub/modules/installer/views/config/localisation.php:18 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/humhub/modules/installer/views/config/localisation.php on line 18