Node.js unhandled 'error' event

Question

I have written a simple code and save it in file try.js .

var http = require(\'http\');
var makeRequest = function(message) {
  var options = {
    host: \'loca         


        

Answer 1

Another server is running on the same port 8080 so change the port in this code or kill the port 8080 and restart it.

Answer 2

Another server is running on same port 8080, so you need to kill and start your instance.

find running instance

$ netstat -nlp | grep 8080

(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp6       0      0 :::8881                 :::*                    LISTEN      28207/node    

kill existing server instance using pid

$ kill -9 28207

start instance

$ node server.js 

Answer 3

This is happening because nothing is listening on localhost:8080. Here are the examples how to handle request errors How to catch http client request exceptions in node.js

Answer 4

change port number. Because your port is already is running.

port number like : 8000,8001,3000,3001,8080 ....

 app.listen(3030,()=>{})

(or) Kill your port number. If you are using Ubuntu OS to follow this steps.

1. To Find PID or TCP using terminal using this command: sudo netstat -ap | grep :"port number"
2. To Kill the process using this command: kill -9 "process_id or tcp_id"
3. To Run your NodeJs

Answer 5

For me, the problem was another instance was running. Search for other node instance running and kill it. It should resume properly after.

Answer 6

A different process is already running in the same port. Either kill the running process or change the port number in the current code. Your issue will be fixed!