Facebook post feed api thumbnail missing

我有兩個不同的域使用相同的Facebook API在我的牆上張貼源。代碼如下：Facebook post feed api thumbnail missing

function postToFeed() 
{ 
// calling the API ... 
var obj = { 
    method: 'feed', 
    link: '<?php echo "http://".$_SERVER['HTTP_HOST'].Yii::app()->baseUrl."/index.php?r=campaign/view&id=$model->campaign_id";?>', 
    picture: '<?php echo "http://".$_SERVER['HTTP_HOST'].Yii::app()->baseUrl."/$model->campaign_image";?>', 
    name: '<?php echo $model->campaign_title;?>', 
    caption: 'Demo', 
    description: '<?php echo $model->campaign_description;?>' 
}; 

function callback(response) 
{ 
    if (response && response.post_id) 
    { 
     fbs_click(<?php echo $myid;?>,<?php echo $model->campaign_id;?>); 
    } 
    else 
    { 
     alert('Post was not published.'); 
    } 
} 

FB.ui(obj, callback);

}

在這兩個領域，後飼料工作。但在其中一個域中，縮略圖不會顯示。我想知道是由於某些文件許可問題嗎？

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