Fatal error: Uncaught Error: Class "yii\base\Model" not found in /users/quirl/www/filemanager/spark/protected/vendor/yiisoft/yii2-debug/src/models/UserSwitch.php:21 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/vendor/yiisoft/yii2-debug/src/models/UserSwitch.php on line 21