Cannot retrieve Users data from database. Server doesnt respond - node.js

Question

I am learning a MERN stack course on Udemy and currently I am trying to retrieve the user's data from the server but I can't. I am able to retrieve the post data but the connections times out for users data. Can you guys help me find out what went wrong? Thank you in advance!
userController snippet:
exports.allUsers = (req, res) => {
const users = User.find({})
.then((users) => {
console.log(users);
})
.catch(err => console.log(err));
};
User routes snippet
const express = require('express'),
router = express.Router(),
{userById, allUsers } = require('../controllers/userController');
router.get('/users', allUsers);
router.param('userID', userById)
module.exports = router;
app.js code snippet
const express = require('express'),
app = express(),
postRoutes = require('./routes/post'),
authRoutes = require('./routes/auth'),
morgan = require("morgan"),
mongoose = require("mongoose"),
bodyParser = require("body-parser"),
cookieParser = require('cookie-parser'),
userRoutes = require('./routes/user'),
expressValidator = require('express-validator');
require('dotenv').config();
mongoose.connect(process.env.MONGO_URI,
{ useUnifiedTopology: true, useNewUrlParser: true })
.then(() => console.log("DB connected"));
app.use(morgan("dev"));
app.use(bodyParser.json());
app.use(cookieParser());
app.use(expressValidator());
app.use('/', postRoutes);
app.use('/', authRoutes);
app.use('/', userRoutes);
app.use(function (err, req, res, next) {
if (err.name === 'UnauthorizedError') {
res.status(401).json({error: "Unauthorised"});
}
});
app.listen(process.env.PORT || 3000, () => {
console.log(`SERVER AT PORT: 3000`);
});
Postman gets stuck here:

Answer 1

You have to end the request / respond to the request . In your userController you are missing ending/responding the request. You are just logging the user result .
Try this :
exports.allUsers = (req, res) => {
const users = User.find({})
.then((users) => {
console.log(users);
res.status(200).json(users);
})
.catch((err) => {
console.log(err);
res.status(500).json(err.message);
});
}