使用Graph API在Facebook Wall中发布图片的问题

我正在使用Facebook的Graph API，以便通过我的应用程序将消息和图片发布到用户的墙上. 我用这个:

I am using the Graph API for Facebook in order to post a message and a picture through my application to the user's wall. I use this one:

$facebook->api('/me/feed', 
               'post', 
               array( 
                 'access_token' => $token, 
                 'message' => $message, 
                 'caption' => $caption, 
                 'description' => $description, 
                 'picture' => $picture, 
                 'cb' => ''
                )
              );

现在可以正常工作约4-5个月.突然我无法发布图片.我根本没有更改代码，但是现在我看不到应该发布的图像.

This works fine for around 4-5 months now. Suddenly I cannot post the picture. I haven't changed my code at all, but now I cannot see the image that is supposed to be posted.

我真的不知道出了什么问题.我将非常感谢您的帮助！

I really don't know what is the problem. I would really appreciate any help!

预先感谢