I don't know what you have, you have to get your router configured, something like this:
$di->set('router', function(){
    $router = new \Phalcon\Mvc\Router();
    $router->removeExtraSlashes(true);
    $router->setDefaultController(’welcome’);
    $router->setDefaultAction(’index’);
    //you can configure your routing like below
    $router->add("/",array(
        "controller" => "welcome",
        "action"     => "index"
    ));
    $router->add("/test",array(
        "controller" => "something",
        "action"     => "happen"
    ));
    return $router;
});