Fatal error: Uncaught Error: Class 'yii\gii\Generator' not found in C:\xampp\htdocs\web\yii\basic\vendor\yiisoft\yii2-gii\src\generators\extension\Generator.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\web\yii\basic\vendor\yiisoft\yii2-gii\src\generators\extension\Generator.php on line 23