Fatal error: Uncaught Error: Class "yii\base\Widget" not found in /users/quirl/www/filemanager/spark/protected/vendor/kartik-v/yii2-krajee-base/src/Widget.php:20 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/vendor/kartik-v/yii2-krajee-base/src/Widget.php on line 20