我通过php获取ShortLink时，老是提示47001，数据格式错误。。我都无语了，求方案。

{\"errcode\":47001,\"errmsg\":\"data format error rid: 6777695f-254d435d-57464448\"}

以下为代码

$path 和 $url 确保正确。

  $post_data= array(

"path" => $path,

"is_permanent" => true, 

"page_title" => "产品信息",

   );

$ch = curl_init(); // 启动一个CURL会话   

$curlVersion = curl_version();

//设置超时

curl_setopt($ch, CURLOPT_TIMEOUT, 30);

curl_setopt($ch,CURLOPT_URL, $url);

curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);

curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);

curl_setopt($ch, CURLOPT_HEADER, FALSE);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

curl_setopt($ch, CURLOPT_POST, TRUE);

curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);

$data = curl_exec($ch);

if($data){

curl_close($ch);

return $data;

} else { 

$error = curl_errno($ch);

curl_close($ch);

throw new WxPayException("curl出错，错误码:$error ".$sslCertPath);

}