在本地运行APP时会出现NotFoundHttpException和ResourceNotFoundExceptionerror

I had use "hello-world-app-php-silex" example for Bigcommerce APP. https://github.com/bigcommerce/hello-world-app-php-silex

But get error when I run this code:

(1) NotFoundHttpException in RouterListener.php line 145: No route found for "GET /"

(2) ResourceNotFoundException in UrlMatcher.php line 96:

Can any body help me ?