Error on first run

[srgtm]

Whichever port I'm using I'm still getting this error((
Error log:
events.js:174
throw er; // Unhandled 'error' event
^

Error: listen EADDRINUSE: address already in use :::9090
at Server.setupListenHandle [as _listen2] (net.js:1280:14)
at listenInCluster (net.js:1328:12)
at Server.listen (net.js:1415:7)
at Function.listen (/home/srgtm/Instagram/node_modules/express/lib/application.js:618:24)
at Object. (/home/srgtm/Instagram/app.js:66:5)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
Emitted 'error' event at:
at emitErrorNT (net.js:1307:8)
at process._tickCallback (internal/process/next_tick.js:63:19)
at Function.Module.runMain (internal/modules/cjs/loader.js:834:11)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

[daarisameen]

Mention your port number in app.listen() function in app.js file.

[0xhenrique]

Don't know if you're still facing this problem. But:

You already have some service running in the port 9090

You have two options:

• You kill what's running in port 9090:
  run sudo ss -lptn 'sport = :9090' to get the PID
  run kill -9 [PID number] without the brackets

• The other option is to change the port in your app.js file if you want to keep the service that's already running on 9090.