appId：gh_8af0474aba29

请求url包含access_token：

https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=28_rDw8tZGaa09L886OEeo9bdEiClDFJDjjv8AIkP4m4_2QCTm72bIy9hzKCoSrLJXpkuV-jhZ1AnlzybZ9XAtCgCLdZ9_FadKfBO4eWZf-swQk6-ATYWcyWtlsS4Ue-hAWvopWZXJZq_zxF7hOYKRjAIASEL

收到的客服消息如下：

{
	"ToUserName": "gh_8af0474aba29",
	"FromUserName": "o3f0l0TDjv9UHYE_S76cqfakiWaM",
	"CreateTime": 1577252315,
	"MsgType": "text",
	"Content": "你好",
	"MsgId": 22580822969327736
}

我返回的transfer_customer_service 消息：

{
	"CreateTime": 1577252315,
	"FromUserName": "gh_8af0474aba29",
	"MsgType": "transfer_customer_service",
	"ToUserName": "o3f0l0TDjv9UHYE_S76cqfakiWaM"
}

报错信息：

{"errcode":40003,"errmsg":"invalid openid hint: [cVrmla03163934]"}

另外，我能给用户发送消息，是成功的，使用的是同一套openId和ACCESS_TOKEN，就是不能使用transfer_customer_service，各种方法都尝试尽头了，这是什么问题呢？非常感谢