title: Why the album photos coming null from Facebook Graph request in iOS?
body: <p>I am trying to write a code in iOS to fetch list of Facebook photos from a specific album but from my iOS app , i am not able to retrieve the list of photos from a album id. It return null.</p>
  
  <p>MyCode:</p>
  
  <pre><code>FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]
                                initWithGraphPath:@"/195146297190415/picture"
                                parameters:@{@"fields": @"url"}
                                HTTPMethod:@"GET"];
  [request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
      // Insert your code here
      NSLog(@"fetched Albums Photo:%@", result);
  
  }];
  </code></pre>
  
  <p>So , this is the above iOS code retreive photos from a album id. Please let me know , where i am doing wrong and why list of photos are coming null. </p>