为什么老会显示don't konw what you are saying about weixin-robot HOT 2 CLOSED

Webot.prototype.middleware = function() {
  var self = this
  return function(req, res, next) {
    var info = Info(req.body)

    info.req = req
    info.res = res
    info.session = req.session

    self.reply(info, function(err, info) {

      // 添加一下规则
      // 屏蔽 webot 的不能为空的消息
      if (info.err) {
        info.reply = ''
      }
      res.body = self.formatReply(info)
      next()
    })
  }
}