Missing Method in NagaokaBnController

Error: The action index.php is not defined in controller NagaokaBnController

Error: Create NagaokaBnController::index.php() in file: app/controllers/nagaoka_bn_controller.php.

<?php
class NagaokaBnController extends AppController {

	var $name = 'NagaokaBn';


	function index.php() {

	}

}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_action.ctp.