Fatal error: Uncaught Error: Class 'yii\base\Model' not found in /home/mpolsk5/public_html/seocomo/craft/vendor/yiisoft/yii2-debug/src/models/UserSwitch.php:21 Stack trace: #0 {main} thrown in /home/mpolsk5/public_html/seocomo/craft/vendor/yiisoft/yii2-debug/src/models/UserSwitch.php on line 21