i'm having some trouble running this simple code on atom:

  *var http = require('http');
  http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end('Hello World!');
}).listen(8080);* 

and it shows the following error:

node:events:498 throw er; // Unhandled 'error' event ^ Error: listen EADDRINUSE: address already in use :::8080 at Server.setupListenHandle [as _listen2] (node:net:1330:16) at listenInCluster (node:net:1378:12) at Server.listen (node:net:1465:7) at Object. (C:\Web Development/Max.js:6:4) at Module._compile (node:internal/modules/cjs/loader:1103:14) at Module._compile (C:\Users\20112.atom\packages\script\node_modules\pirates\lib\index.js:136:24) at Module._extensions..js (node:internal/modules/cjs/loader:1155:10) at Object.newLoader [as .js] (C:\Users\20112.atom\packages\script\node_modules\pirates\lib\index.js:141:7) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) Emitted 'error' event on Server instance at: at emitErrorNT (node:net:1357:8) at processTicksAndRejections (node:internal/process/task_queues:83:21) { code: 'EADDRINUSE', errno: -4091, syscall: 'listen', address: '::', port: 8080 } Any ideas why is this error occuring?