Fatal error: Uncaught Error: Class 'yii\debug\Panel' not found in /var/www/uchetprosto.usa-ak.com/up/vendor/yiisoft/yii2-debug/src/panels/RequestPanel.php:21 Stack trace: #0 {main} thrown in /var/www/uchetprosto.usa-ak.com/up/vendor/yiisoft/yii2-debug/src/panels/RequestPanel.php on line 21