The Rails application crashes on Heroku, but it works fine locally & # 8594; "Status changed from launch to crashed"

Question

repo at: git @ github.com: assafshomer / sample_app.git

• This app is my tutorial app based on the wonderful Michael Hartle tutorial.
• The application runs smoothly in development, and the test suite is green.
• When deploying to Heroku, I immediately get the following error: "Application error. An error occurred in the application and your page could not be sent"
• The problem started after upgrading to Rails4 (but I know that the problem is not in Rails4 itself, because, for example, git: //github.com/railstutorial/sample_app_rails_4.git deploys well in Heroku)
• I know you ask: "Have you migrated db to Heroku?" I did. I even ran pg: reset, and then rake db again: just in case, migrate to Heroku. They seemed to run normally.

Heroku magazines also provide no information (at least I don't see anything useful)

2013-05-25T22:11:26.070468+00:00 heroku[web.1]: Process exited with status 0 2013-05-25T22:11:26.083572+00:00 heroku[web.1]: State changed from starting to crashed 2013-05-25T22:13:09.372294+00:00 heroku[run.4121]: State changed from up to complete 2013-05-25T22:13:09.357146+00:00 heroku[run.4121]: Process exited with status 1 2013-05-25T22:13:50.829887+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/ host=devsampleapp.herokuapp.com fwd="93.172.16.63" dyno= connect= service= status=503 bytes= 

also the rail console does not appear:

 2013-05-26T06:41:34.942569+00:00 heroku[api]: Starting process with command `bin/rails console` by [e-mail] 2013-05-26T06:41:38.312107+00:00 heroku[run.5325]: Awaiting client 2013-05-26T06:41:38.339816+00:00 heroku[run.5325]: Starting process with command `bin/rails console` 2013-05-26T06:41:39.112396+00:00 heroku[run.5325]: Client connection closed. Sending SIGHUP to all processes 2013-05-26T06:41:40.329832+00:00 heroku[run.5325]: Process exited with status 0 2013-05-26T06:41:40.357047+00:00 heroku[run.5325]: State changed from starting to complete 

I applied for support with Heroku, but this will be considered only on the very early Tuesday, and I want this "upgrade to rails4" to work already, so any help in resolving this secret will be highly appreciated.

obviously, the best way to reproduce is to clone the repo and turn around on the hero :)

Thanks!!

Assaf Shomer (assafshomer at gmail)

Answer 1

In rails4, several files ( bin/rails , bin/rake and bin/bundle ) responsible for the startup phase have recently been added or moved from different places (e.g. script/rails ).

It seems that they are not in your application. It is strange that it works on your local machine, but not on the hero, but I tried and added them. This seems to work.

You can create them simply by running rake rails:update:bin .