查询显示快速与猫鼬为空

Question

我一次又一次得到空值。我哪里错了？这是我的app.js的代码。预先感谢。

app.post('/verify', (req, res) => {
  var mongoose = require('mongoose');
  var mongoDB = 'mongodb://127.0.0.1/cuts';

  var mongoose = require('mongoose');
  var Schema = mongoose.Schema;

  var phone=req.body.phone;
  var schema = new mongoose.Schema({
    phone: String,
    otp: String});
  var Users = mongoose.model('usersotp', schema);

  Users.findOne({
    phone: req.body.phone
  }, function(err, user) {
   console.log('Error: ' + err, user);
  });
  res.send("Any Text");
});