Fatal error: Uncaught Error: Call to a member function getControllerNamespace() on null in /var/www/html/vendor/yiisoft/yii2-gii/src/generators/controller/default/controller.php:15 Stack trace: #0 {main} thrown in /var/www/html/vendor/yiisoft/yii2-gii/src/generators/controller/default/controller.php on line 15