Login com Facebook não retorna o email do usuario

Olá pessoal, estou tentando realizar um login via facebook, nunca tinha feito isto antes.

Estou encontrando problemas ao receber o email do usuário, tenho acesso a quase todos os dados menos o email.

segue abaixo o código:

<?php
session_start();

// added in v4.0.0

require_once 'autoload.php';
use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\Entities\AccessToken;
use Facebook\HttpClients\FacebookCurlHttpClient;
use Facebook\HttpClients\FacebookHttpable;

// init app with app id and secret FacebookSession::setDefaultApplication( 'xxxxxxxxxx','xxxxxxxxxxx' ); // login helper with redirect_uri $helper = new FacebookRedirectLoginHelper('http://www.helpeventos.com/checklist/fbconfig.php' ); try { $session = $helper->getSessionFromRedirect(); } catch( FacebookRequestException $ex ) { // When Facebook returns an error } catch( Exception $ex ) { // When validation fails or other local issues }

// see if we have a session
if ( isset( $session ) ) {
// graph api request for user data

 $request = new FacebookRequest( $session, 'GET', '/me' );
 $response = $request->execute();
 // get response
 $graphObject = $response->getGraphObject();
 $fbid = $graphObject->getProperty('id'); // To Get Facebook ID
 $fbfullname = $graphObject->getProperty('name'); // To Get Facebook full name
 $femail = $graphObject->getProperty('email'); // To Get Facebook email ID
$fbimg = 'https://graph.facebook.com/'.$fbid.'/picture?width=75';

/ ---- Session Variables -----/

 $_SESSION['FBID'] = $fbid;
 $_SESSION['FULLNAME'] = $fbfullname;
 $_SESSION['EMAIL'] = $femail;
$_SESSION['IMG'] = $fbimg;
$_SESSION['TUSER'] = '1';
 /* ---- header location after session ----*/

require_once 'functions.php';
checkuser($fbid,$fbfullname,$femail);

 header("Location: inicial.php?type_user=1");

} else {

 $loginUrl = $helper->getLoginUrl();
 header("Location: ".$loginUrl);
}
?>

só para observação não é problema de não autorização de usuários, pois estou testando com usário que liberam seus emails para serem exibidos.

desde já agradeço as ajudas aqui postadas.

$request = new FacebookRequest( $session, 'GET', '/me' );
 $response = $request->execute();
 // get response
 $graphObject = $response->getGraphObject();
 $fbid = $graphObject->getProperty('id'); // To Get Facebook ID
 $fbfullname = $graphObject->getProperty('name'); // To Get Facebook full name
 $femail = $graphObject->getProperty('email'); // To Get Facebook email ID
$fbimg = 'https://graph.facebook.com/'.$fbid.'/picture?width=75';

 $request = new FacebookRequest( $session, 'GET', '/me?fields=email,first_name,last_name,gender,name,id' );
 $response = $request->execute();