Fatal error: Uncaught Error: Class 'yii\web\AssetBundle' not found in /mnt/www/service_center/vendor/yiisoft/yii2-debug/DebugAsset.php:18 Stack trace: #0 {main} thrown in /mnt/www/service_center/vendor/yiisoft/yii2-debug/DebugAsset.php on line 18