Multi Module Project setDefaults Route problem

Hi, i have and other problem with multi module project, i cant access from the base url: https://https://feedback/ i defined this route:

$router->setDefaults(array(
                'module' => 'backend',
                'controller' => 'login',
                'action' => 'index'
            ));

but if i access from: https://feedback/backend/login this work!.. any Help please?

this is my bootstrap.

          <?php

  error_reporting(E_ALL);

  try {
      define('SITE_DOMAIN', $_SERVER['HTTP_HOST']);

      /**
       * Read the configuration
       */
      $config = include(__DIR__ . '/../app/config/' . SITE_DOMAIN . '_db.php');

      /**
       * The FactoryDefault Dependency Injector automatically register the right services providing a full stack framework
       */
      $di = new \Phalcon\DI\FactoryDefault();

      /**
       * The URL component is used to generate all kind of urls in the application
       */
      $di->set('url', function() use ($config) {
          $url = new \Phalcon\Mvc\Url();
          $url->setBaseUri($config->application->baseUri);
          return $url;
      });

      /**
       * Database connection is created based in the parameters defined in the configuration file
       */
      $di->set('db', function() use ($config) {
          return new \Phalcon\Db\Adapter\Pdo\Mysql(array(
              "host" => $config->database->host,
              "username" => $config->database->username,
              "password" => $config->database->password,
              "dbname" => $config->database->name
          ));
      });

      /**
       * If the configuration specify the use of metadata adapter use it or use memory otherwise
       */
      $di->set('modelsMetadata', function() use ($config) {
          if (isset($config->models->metadata)) {
              $metadataAdapter = 'Phalcon\Mvc\Model\Metadata\\' . $config->models->metadata->adapter;
              return new $metadataAdapter();
          } else {
              return new \Phalcon\Mvc\Model\Metadata\Memory();
          }
      });

      /**
       * Start the session the first time some component request the session service
       */
      $di->set('session', function() {
          $session = new \Phalcon\Session\Adapter\Files();
          $session->start();
          return $session;
      });

      //Specify routes for modules
      $di->set('router', function () {
          $router = new \Phalcon\Mvc\Router(false);
          $router->setDefaultModule("backend");
          $router->setDefaultAction('index');

          $router->setDefaults(array(
              'module' => 'backend',
              'controller' => 'login',
              'action' => 'index'
          ));
          $router->notFound(array(
              'module' => 'backend',
              'controller' => 'error',
              'action' => 'index'
          ));

          $router->add('/:module/:controller', array(
              'module' => 1,
              'controller' => 2,
              'action' => 'index',
          ));
          $router->add('/:module/:controller/:action/:params', array(
              'module' => 1,
              'controller' => 2,
              'action' => 3,
              'params' => 4
          ));
          return $router;
      });
      /**
       * Handle the request
       */
      $application = new \Phalcon\Mvc\Application();
      $application->setDI($di);
      // Register the installed modules
      $application->registerModules(
              array(
                  'public' => array(
                      'className' => 'Frontend\Module',
                      'path' => '../app/frontend/Module.php',
                  ),
                  'backend' => array(
                      'className' => 'Backend\Module',
                      'path' => '../app/backend/Module.php',
                  )
              )
      );

      echo $application->handle()->getContent();
  } catch (Phalcon\Exception $e) {
      echo $e->getMessage();
  } catch (PDOException $e) {
      echo $e->getMessage();
  }