Deploying nodeJS to Heroku internal error

Question

I am trying to upload NodeJS app to Heroku. Everything installs fine and when I run

heroku local

Then everything works as expected on a local host. But when I run

heroku ps:scale web=1
heroku open

Browser opens, and it is loading the page for like 2-3 minutes, or even more and then I receive Application error. I am new to web development so that any ideas will be helpful. Thanks!

Can you add the error logs to the question? You can check the logs by running the command `heroku logs`. — gnerkus, Mar 11 '16 at 23:29
@gnerkus solved that, thank you so much, I didn't know about logs. Thank you so much! — Sasha Kozachuk, Mar 11 '16 at 23:44

score 1 · Accepted Answer · edited May 23 '17 at 12:01

Thanks to gnerkus I managed to figure that out. In logs I found next error:

heroku Error R10 (Boot timeout) -> Web process failed to bind to $PORT

Heroku dynamically assigns port to app and I was doing it manually:

app.listen(4000, function () {

Instead i just need listen like this:

.listen(process.env.PORT || 5000)

Answer was here: Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)

Deploying nodeJS to Heroku internal error

1 Answers1