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