Heroku H10 Error

index.js

// port needs to be set via the process.env.PORT otherwise results in port binding error

var express = require('express');
var app = express();

...

app.set('port', (process.env.PORT || 5000));


...

http.listen(app.get('port'), function() {
  console.log('Node app is running on port', app.get('port'));
});