Every thing you deploy on heroku must be listening on $PORT. You should get it by querying the environment variable inside your express app.
I suggest you check devcenter.heroku.com/articles/depl...
You can also see how to do that in the heroku help help.heroku.com/P1AVPANS/why-is-my...
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Every thing you deploy on heroku must be listening on $PORT. You should get it by querying the environment variable inside your express app.
I suggest you check devcenter.heroku.com/articles/depl...
You can also see how to do that in the heroku help help.heroku.com/P1AVPANS/why-is-my...