Facebook PHP SDK - Graph returned an error: Invalid OAuth access token

Question

Here is my code:

login.php:

 \'\',
  \'         


        

Answer 1

You didn't retrieve the valid access token.

Change:

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


$helper = $fb->getRedirectLoginHelper();  

try {  
  $accessToken = $helper->getAccessToken();  
  $response = $fb->get('/me?fields=id,name', $accessToken );
  ....
} catch(Facebook\Exceptions\FacebookResponseException $e) { 
...

Have a look here

Answer 2

Error:
Facebook SDK returned an error: Access token was not returned from Graph.

Only add Your call back URL in

$helper = $fb->getRedirectLoginHelper();

to

$helper = $fb->getRedirectLoginHelper('http://www.sportsector.bg/login-callback.php');

it's Working form me ..