Код контроллераsrc/AppBundle/Controller/SecurityController.php at line 30

/**
 * @Route("/login", name="security_login")
 */
public function loginAction(AuthenticationUtils $helper)
{
    return $this->render('security/login.html.twig', [
        // last username entered by the user (if any)
        'last_username' => $helper->getLastUsername(),
        // last authentication error (if any)
        'error' => $helper->getLastAuthenticationError(),
    ]);
}

Код шаблона Twigapp/Resources/views/security/login.html.twig at line 1