Problema com Login do Facebook

[ZartRock]

Num desenvolvimento de um projeto, estamos com o problema em utilizar SDK do facebook, no qual, depois que o usuário coloca as informações, aparece o seguinte erro:
 

Access Token string(198) "CAAU0vjnsYNsBABxomYJncixngmZBUNX5hu0dgZB712QnpjdJgxdq64MyhekIpGnEl1ZCxfphqTNiZCmzyZBKg7Ds6Yizv1Sspf8P8qCA1vwGy37JpsoIrbyWxvB6aauGyKHckEwjjljweujlZBon87Bo9mLmog5vKHYwZAntHNMfQZA48cttRT035bn2lnpezScZD" Metadata
object(Facebook\Authentication\AccessTokenMetadata)#13 (1) { ["metadata":protected]=> array(7) { ["app_id"]=> string(16) "1465366503776475" ["application"]=> string(8) "Violence" ["expires_at"]=> object(DateTime)#17 (3) { ["date"]=> string(26) "2015-10-30 02:59:57.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(17) "America/Sao_Paulo" } ["is_valid"]=> bool(true) ["issued_at"]=> object(DateTime)#18 (3) { ["date"]=> string(26) "2015-08-31 01:59:57.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(17) "America/Sao_Paulo" } ["scopes"]=> array(4) { [0]=> string(13) "user_location" [1]=> string(12) "user_website" [2]=> string(5) "email" [3]=> string(14) "public_profile" } ["user_id"]=> string(15) "877021509040479" } }

 

Index do projeto:
 

<?php
  session_start();
  $fb = new Facebook\Facebook([
  'app_id' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxx',
  'app_secret' => 'xxxxxxxxxxxxxxxxxxxxxxxx',
  'default_graph_version' => 'v2.2',
  ]);

$helper = $fb->getRedirectLoginHelper();

$permissions = ['email']; // Optional permissions
$loginUrl = $helper->getLoginUrl('http://localhost/Ver/TCC/fb-callback.php', $permissions);

echo "<a href='$loginUrl'>Log in with Facebook!</a>";


?>

fb-callback.php:
 

<?php
require_once __DIR__ . '/facebook-php-sdk-v4-5.0-dev/src/Facebook/autoload.php';

session_start();

$fb = new Facebook\Facebook([
  'app_id' => 'xxxxxxxxxxxxxxxxx',
  'app_secret' => 'xxxxxxxxxxxxxx',
  'default_graph_version' => 'v2.2',
  ]);

$helper = $fb->getRedirectLoginHelper();

try {
  $accessToken = $helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
  // When Graph returns an error
  echo 'Graph returned an error: ' . $e->getMessage();
  exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
  // When validation fails or other local issues
  echo 'Facebook SDK returned an error: ' . $e->getMessage();
  exit;
}

if (! isset($accessToken)) {
  if ($helper->getError()) {
    header('HTTP/1.0 401 Unauthorized');
    echo "Error: " . $helper->getError() . "\n";
    echo "Error Code: " . $helper->getErrorCode() . "\n";
    echo "Error Reason: " . $helper->getErrorReason() . "\n";
    echo "Error Description: " . $helper->getErrorDescription() . "\n";
  } else {
    header('HTTP/1.0 400 Bad Request');
    echo 'Bad request';
  }
  exit;
}

// Logged in
echo '<h3>Access Token</h3>';
var_dump($accessToken->getValue());

// The OAuth 2.0 client handler helps us manage access tokens
$oAuth2Client = $fb->getOAuth2Client();

// Get the access token metadata from /debug_token
$tokenMetadata = $oAuth2Client->debugToken($accessToken);
echo '<h3>Metadata</h3>';
var_dump($tokenMetadata);

// Validation (these will throw FacebookSDKException's when they fail)
$tokenMetadata->validateAppId($config['app_id']);
// If you know the user ID this access token belongs to, you can validate it here
//$tokenMetadata->validateUserId('123');
$tokenMetadata->validateExpiration();

if (! $accessToken->isLongLived()) {
  // Exchanges a short-lived access token for a long-lived one
  try {
    $accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken);
  } catch (Facebook\Exceptions\FacebookSDKException $e) {
    echo "<p>Error getting long-lived access token: " . $helper->getMessage() . "</p>\n\n";
    exit;
  }

  echo '<h3>Long-lived</h3>';
  var_dump($accessToken->getValue());
}

$_SESSION['fb_access_token'] = (string) $accessToken;

// User is logged in with a long-lived access token.
// You can redirect them to a members-only page.
//header('Location: https://example.com/members.php');
?>

 

Editado Agosto 31, 2015 por ZartRock