const http = require('http');

const server = http.createServer();

server.on('connection',(socket) => {
    console.log('new connection..');
} );

server.listen(3000);

console.log('Listening on port 3000..');

module.js:550
    throw err;
    ^

Error: Cannot find module '/home/nolo/Programming_W_Area/nodejs/second_app/app.js'
    at Function.Module._resolveFilename (module.js:548:15)
    at Function.Module._load (module.js:475:25)
    at Function.Module.runMain (module.js:694:10)
    at startup (bootstrap_node.js:204:16)
    at bootstrap_node.js:625:3