发送视频消息 thumb_media_id 传参会导致报错
https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Service_Center_messages.html {
"touser":"OPENID",
"msgtype":"video",
"video":
{
"media_id":"MEDIA_ID",
"thumb_media_id":"MEDIA_ID",
"title":"TITLE",
"description":"DESCRIPTION"
}
}
