Fatal error: Uncaught Error: Class 'kartik\base\AssetBundle' not found in /mnt/www/fwrsxt/vendor/kartik-v/yii2-widget-fileinput/SortableAsset.php:20 Stack trace: #0 {main} thrown in /mnt/www/fwrsxt/vendor/kartik-v/yii2-widget-fileinput/SortableAsset.php on line 20