Fatal error: Uncaught Error: Class 'yii\debug\Panel' not found in /var/www/up.tantal-metall.com/yii_up/vendor/yiisoft/yii2-debug/src/panels/RouterPanel.php:27 Stack trace: #0 {main} thrown in /var/www/up.tantal-metall.com/yii_up/vendor/yiisoft/yii2-debug/src/panels/RouterPanel.php on line 27