小程序发送统一消息，不指定小程序路径会提示参数错误

请求地址:https://api.weixin.qq.com/cgi-bin/message/wxopen/template/uniform_send?access_token=71_AIzn_l784XvYOM4wUX5QKdQJ4-EOX3_OfZKkSm-N1fbrbyeeSFuqzCAF0-oWUT9s5lqg0EgTK_PPYRUDh-ue28V4T1DynIaKw1cmjlC5IJANNqpcGa9keaMXr1MAFWhAHARWN

参数：

{

    "touser":"oB91O08Fy9LJEZ6LKXgTdbSz8m08",

    "mp_template_msg":{

        "appid":"wxd08c34cb053969fc",

        "template_id":"t8zwfkU9cYm6-0r3_O-sCGiRnNRBOVeSy13bChgA1Ss",

        "miniprogram":{

            "appid":"wx6c8819ef8e2ebdf5"

            ,"pagepath":""

        },

        "data":{

            "thing3":{

                "value":"恭喜你购买成功！",

                "color":"#173177"

            }

        }

    }

}

响应：

{

    "errcode": 47003,

    "errmsg": "argument invalid! rid: 64c71f77-3ead408d-30fc85d8"

}