Fatal error: Uncaught Error: Class "yii\base\Model" not found in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/clean-theme_1728508025/models/UploadConfiguration.php:17 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/runtime/module_backups/clean-theme_1728508025/models/UploadConfiguration.php on line 17