title: While create adset then I got error 'Invalid parameter'
body: <p>I am using FB Ads API, and successfully created campaigns and get the ID from Facebook. In the next step to create adset with below code then got error.</p>
  
  <p>// Call create using an array of parameters.</p>
  
  <pre><code>$data = array(
      AdSetFields::NAME =&gt; 'My AdSet',
      AdSetFields::BID_TYPE =&gt; 'CPC',
      AdSetFields::BID_INFO =&gt; array(
      'CLICKS' =&gt; 500,
      ),
      AdSetFields::CAMPAIGN_STATUS =&gt; AdSet::STATUS_ACTIVE,
      AdSetFields::DAILY_BUDGET =&gt; 200,
      AdSetFields::CAMPAIGN_GROUP_ID =&gt; $campaign_id,
      AdSetFields::TARGETING =&gt; array(
      'geo_locations' =&gt; array(
      'countries' =&gt; array(
      'US',
      'GB',
      ),
      ),
      ),
      );
      $ad_set = new AdSet(null, $account-&gt;id);
      $ad_set-&gt;create($data);
  </code></pre>
  
  <p>Fatal error: Uncaught exception 'FacebookAds\Http\Exception\AuthorizationException' with message 'Invalid parameter' in /www/facebookads/src/FacebookAds/Http/Exception/RequestException.php:129</p>