客服接口-发消息接口调用请求说明 http请求方式: POST https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=ACCESS_TOKEN， 调用客服发消息接口，出现48001错误，"errcode":48001,"errmsg":"api unauthorized rid: 60794f6c-65d1c6a9-382e820a" 请问是什么原因