mongoose -无法使用find方法获取数据

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Failed to connect to MongoDB:', error);
  });

const mongoose = require('mongoose');

const userSchema = new mongoose.Schema({
  name: String,
  age: Number,
});

const User = mongoose.model('User', userSchema);

User.find({ name: 'John' })
  .then((users) => {
    console.log('Found users:', users);
  })
  .catch((error) => {
    console.error('Failed to find users:', error);
  });