Cant authentificate user with FOSUser bundle - angularjs

Question

I am creating an Angularjs app with Symfony 2.8 on the backend, using FOSUser bundle for the user management.
I have a controller to check the user login and create the user session, but when i try to create the user session symfony returns me this error message:
Controller "UserBundle\Controller\LoginController::indexAction()" requires that you provide a value for the "$session" argument (because there is no default value or because there is a non optional argument after this one).
There is my controller code:
<?php
namespace UserBundle\Controller;
use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\Session;
use UserBundle\Entity\User;
class LoginController extends Controller
{
public function indexAction(Session $session)
{
$arrResult = array('STATUS' => 'ERROR', 'ERROR' => 'INIT', 'DATA' => array() );
// get post data
$postData = file_get_contents("php://input");
$postData = json_decode($postData, TRUE);
$email = $postData['email'];
$password = $postData['password'];
if( empty($email) || empty($password) )
{
$arrResult['ERROR'] = 'ALL_FIELDS_ARE_REQUIRED';
return new JsonResponse($arrResult);
}
$user_manager = $this->get('fos_user.user_manager');
$factory = $this->get('security.encoder_factory');
$user = $user_manager->findUserByEmail($email);
$encoder = $factory->getEncoder($user);
$salt = $user->getSalt();
if( $encoder->isPasswordValid($user->getPassword(), $password, $salt) )
{
// create user session
$this->createLoginSession($session, $user);
$arrResult['DATA'] = array('USERNAME' => $user->getUsername());
$arrResult['STATUS'] = 'OK';
}
else
{
$arrResult['ERROR'] = 'INVALID_CREDENTIALS';
}
return new JsonResponse($arrResult);
}
private function createLoginSession($session, $objUser)
{
$objToken = new UsernamePasswordToken($objUser, null, 'main', $objUser->getRoles() );
// save token
$objTokenStorage = $this->get("security.token_storage")->setToken($objToken);
$session->set( '_security_main', serialize($objToken) );
}
}
What i am doing wrong?
Thanks!