新的Heroku应用程序上的应用程序错误

Question

I know this question has been answered a lot, but I still can't figure out a solution to my problem. I've created a little app which is supposed to work with the Slack webhook. Locally, it works just fine - I use node app in order to launch it.

I've created my app on Heroku, pushed my files ( Procfile app.js hellobot.js package.json )

But when I visit http://slackbot2.herokuapp.com/ , I get an Application Error message.

I already tried the log but I get this :

2015-06-11T23:39:05.967607+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=slackbot2.herokuapp.com request_id=b3783c70-306b-4528-9d81-4e8ab43e9132 fwd="*******" dyno= connect= service= status=503 bytes=

This heroku run rails console and heroku run rake db:migrate won't work. bash: rails command not found . Rails and Rake are installed on my Mac (OSX 10.10.4). Those were the only solutions that worked for others .. But not me.

Answer 1

Same thing happened with me. As far as I can remember, the reason for this is the port you used in the application. Heroku will not run your app on port 8080 or 3000, instead it will be some random port. Use this code to fix the problem.

var port = process.env.PORT || 8080;

Use this code to start the server.

app.listen(port, function() { console.log('Our app is running on http://localhost:' + port); });