参照 https://developers.weixin.qq.com/doc/aispeech/confapi/thirdkefu/changestate.html 尝试修改客服状态，但是提示

 {"errcode":-1,"errmsg":"failed to set customer service status","rid":"ea2fff1d"}

这是什么原因？通过客服状态查询接口获得的客服状态是

{
	"errcode": 0,
	"kefustate": "off",
	"status": "asking",
	"rid": "37d8e291"
}