您好，我正在尝试填写使用（HTML，CSS，JS，NODE.JS，PASSPORT.JS

问：

我正在尝试使我的注册页面正常工作。当我输入用户名和密码时，我只得到.我收到以下错误：{"message":"Registration failed"}

MongooseError: Operation `users.findOne()` buffering timed out after 10000ms
    at Timeout.<anonymous> (C:\path\to\your\file\node_modules\mongoose\lib\drivers\node-mongodb-native\collection.js:186:23)
    at listOnTimeout (node:internal/timers:569:17)
    at process.processTimers (node:internal/timers:512:7)

这是我用于用户注册表单的服务器.js代码：

app.post('/user/register', async (req, res) => {
  const { username, password } = req.body;

  try {
    const existingUser = await User.findOne({ username });

    if (existingUser) {
      return res.status(409).json({ message: 'Username already exists' });
    }

    // Create a new user instance
    const newUser = new User({ username, password });

    // Save the user to the database
    await newUser.save();

    console.log('User registered successfully');
    res.status(200).json({ message: 'User registered successfully' });
  } catch (err) {
    console.error(err); // Log the error for debugging
    res.status(500).json({ message: 'Registration failed' });
  }
});

您好，我正在尝试使我的注册页面正常工作。当我输入用户名和密码时，我只得到.我收到以下错误：现在我也收到，{"message":"Registration failed"}

MongooseError: Operation `users.findOne()` buffering timed out after 10000ms
    at Timeout.<anonymous> (C:\Users\RistovskiWIN\Desktop\MladenWeb\node_modules\mongoose\lib\drivers\node-mongodb-native\collection.js:186:23)        
    at listOnTimeout (node:internal/timers:569:17)
    at process.processTimers (node:internal/timers:512:7)