使用facebook营销api调用成员函数getData(）

我目前正在测试facebook营销API，以便使用它从自定义仪表板的活动中获取数据。

我可以从广告账户中获取数据，但出于某种原因，对我来说，未知的原因是在获取数据的同时获得了Call to a member function getData() on a non-object。它将在退出之前输出一些数据。

我正在测试这个

if($_SESSION["facebook_access_token"]) {
    Api::init(
        'XXXXXXXXXX',
        'XXXXXXXXXXXXXXXXX',
        $_SESSION["facebook_access_token"]
    );
    $account = new AdAccount('act_XXXXXXXXXXXXX');
    $campaigns = $account->getCampaigns(array(
            CampaignFields::NAME,
            CampaignFields::OBJECTIVE,
            CampaignFields::EFFECTIVE_STATUS,
            CampaignFields::CONFIGURED_STATUS
    ), array(
        CampaignFields::EFFECTIVE_STATUS => array(
            ArchivableCrudObjectEffectiveStatuses::ACTIVE
        ),
    ));
    foreach($campaigns as $campaignset) {
        $cid = $campaignset->getData()['id'];
        $campaign = new Campaign($cid);
        $insights = $campaign->getInsights(array(
           InsightsFields::CAMPAIGN_NAME,
           InsightsFields::ADSET_NAME
        ));
        var_dump($insights->current()->getData());
    }

}

它将输出这个

array (size=48)
  'account_id' => null
  'account_name' => null
  'action_values' => null
  'actions' => null
  'actions_per_impression' => null
  'ad_id' => null
  'ad_name' => null
  'adset_id' => null
  'adset_name' => null
  'call_to_action_clicks' => null
  'campaign_id' => null
  'campaign_name' => string 'Svendborg - Mødsparnord – kopi' (length=33)
  'cost_per_action_type' => null
  'cost_per_total_action' => null
  'cost_per_unique_click' => null
  'cost_per_inline_link_click' => null
  'cost_per_inline_post_engagement' => null
  'cpm' => null
  'cpp' => null
  'ctr' => null
  'date_start' => string '2015-11-05' (length=10)
  'date_stop' => string '2015-12-07' (length=10)
  'frequency' => null
  'impressions' => null
  'inline_link_clicks' => null
  'inline_post_engagement' => null
  'product_id' => null
  'reach' => null
  'relevance_score' => null
  'social_clicks' => null
  'social_impressions' => null
  'social_reach' => null
  'spend' => null
  'total_action_value' => null
  'total_actions' => null
  'total_unique_actions' => null
  'unique_clicks' => null
  'unique_ctr' => null
  'unique_social_clicks' => null
  'video_avg_pct_watched_actions' => null
  'video_avg_sec_watched_actions' => null
  'video_complete_watched_actions' => null
  'video_p100_watched_actions' => null
  'video_p25_watched_actions' => null
  'video_p50_watched_actions' => null
  'video_p75_watched_actions' => null
  'video_p95_watched_actions' => null
  'website_ctr' => null

和其他一些活动，但每次都会在同一地点出现上述错误。但我看不出哪里出了问题。