Running POSTMAN Post/Get Requests in a Node.js server - issues with app crashing

import http from 'http';
const PORT = process.env.PORT;

const server = http.createServer((req, res) => {
    console.log(req.url);
    console.log(req.method);

    res.writeHead(200, { 'Content-Type': 'text/html' });
    res.end('<h1>Hello World!</h1>');
});

server.listen(PORT, () => {
    console.log(`Server running on port ${PORT}`);
});

import http from 'http';
const PORT = process.env.PORT;

const server = http.createServer((req, res) => {
    console.log(req.url);
    console.log(req.method);

    res.writeHead(200, { 'Content-Type': 'text/html' });
    res.end('<h1>Hello World!</h1>');
});

server.listen(PORT, () => {
    console.log(`Server running on port ${PORT}`);
});