Fatal error: Uncaught Error: Class 'kartik\base\Widget' not found in /var/www/html/autocar/vendor/kartik-v/yii2-tree-manager/src/TreeView.php:31
Stack trace:
#0 {main}
thrown in /var/www/html/autocar/vendor/kartik-v/yii2-tree-manager/src/TreeView.php on line 31