Error with Lumen under WAMP

After install Lumen with composer:

composer global require "laravel/lumen-installer=~1.0"

Uncomment the command: Dotenv::load(DIR.'/../'); in bootstrap/app.php file.

Then I try to run lumen as follow: (using port 8080 because iis in the same windows machine)

http://localhost:8080/lumen/public/

It shows me these errors:

NotFoundHttpException in Application.php line 1228:

1. in Application.php line 1228
2. at Application->handleDispatcherResponse(array('0')) in Application.php line 1184
3. at Application->Laravel\Lumen{closure}() in Application.php line 1414
4. at Application->sendThroughPipeline(array(), object(Closure)) in Application.php line 1185
5. at Application->dispatch(null) in Application.php line 1125
6. at Application->run() in index.php line 28

Do you have some idea about this error.

Tks