有效的访问令牌在Graph API Explorer中不起作用

Question

Facebook Access Token调试器说我的访问令牌有效：

Issued  1368430222 (24 minutes ago)

Expires 1373614222 (in about 2 months)

Valid   True

但是当我在Graph API资源管理器中对它进行测试时，它会因此错误而失败：

{

  "error": {

  "message": "An active access token must be used to query information about the current user.",

  "type": "OAuthException", 

  "code": 2500
  }

}