Heroku app crashing

Question

I've just deployed my RoR app to Heroku, and the app works on my local port, but when I visit the Heroku address I get:

App crashed This application is temporarily offline. If you're the administrator of this app, please check your heroku logs for the backtrace.

This may be the error that I found in the logs:

2011-02-25T17:08:25-08:00 heroku[router]: Error H10 (App crashed) -> GET afternoon-warrior-452.heroku.com/ dyno=none queue=0 wait=0ms service=0ms bytes=0
2011-02-25T17:08:25-08:00 heroku[router]: Error H10 (App crashed) -> GET afternoon-warrior-452.heroku.com/favicon.ico dyno=none queue=0 wait=0ms service=0ms bytes=0

How do I fix this?

Solution

^{My guess is that you forgot to set up the production database. Perhaps...}

^{$ heroku rake db:setup or $ heroku rake db:push ...is needed?}

Update: Aha! Going by your error message in the comment, you have an unresolved merge conflict in application_helper.rb. That's what those <<<<<< lines are, something inserted by git (or perhaps some local SCCS you are using) that usually point out conflicts between a branch and local changes.

Start with "git status" and also just look at application_helper.rb in your editor.

Comments

[Justin Meltzer]

I found this from the logs. Could this be the error? 2011-02-25T17:08:25-08:00 heroku[router]: Error H10 (App crashed) -> GET afternoon-warrior-452.heroku.com/ dyno=none queue=0 wait=0ms service=0ms bytes=0 2011-02-25T17:08:25-08:00 heroku[router]: Error H10 (App crashed) -> GET afternoon-warrior-452.heroku.com/favicon.ico dyno=none queue=0 wait=0ms service=0ms bytes=0

[afraziz]

That only tells us that there was an error, not really what happened. Trying running heroku restart and then heroku logs right away to see if anything interesting shows up.

[Justin Meltzer]

Here's some strange stuff: 2011-02-25T17:09:08-08:00 app[web.1]: /app/8d489c6f-7838-45ee-bc56-f2e2e72a0a94/home/.bundle/gems/‌​ruby/1.8/gems/active‌​support-3.0.4/lib/ac‌​tive_support/depende‌​ncies.rb:239:in require': /app/8d489c6f-7838-45ee-bc56-f2e2e72a0a94/home/app/helpers/a‌​pplication_helper.rb‌​:2: syntax error, unexpected tLSHFT, expecting kEND (SyntaxError) 2011-02-25T17:09:08-08:00 app[web.1]: ^

[Justin Meltzer]

2011-02-25T17:09:08-08:00 app[web.1]: /app/8d489c6f-7838-45ee-bc56-f2e2e72a0a94/home/app/helpers/a‌​pplication_helper.rb‌​:15: syntax error, unexpected tLSHFT, expecting kEND 2011-02-25T17:09:08-08:00 app[web.1]: <<<<<<< HEAD 2011-02-25T17:09:08-08:00 app[web.1]: ^ 2011-02-25T17:09:08-08:00 app[web.1]: /app/8d489c6f-7838-45ee-bc56-f2e2e72a0a94/home/app/helpers/a‌​pplication_helper.rb‌​:17: syntax error, unexpected tEQQ, expecting $end 2011-02-25T17:09:08-08:00 app[web.1]: ^ 2011-02-25T17:09:08-08:00 app[web.1]: =======

[Justin Meltzer]

No I don't think this is it. Check out some of the logs I've reproduced below jdl's answer. The error may be in there.

[afraziz]

Looks like a code bug. Post your application_helper.rb file in your original question and let's see. How well is this app unit tested, because something like that should be blowing up on any functional test case.

[Justin Meltzer]

ahh yes, i think this is it. But I thought I had fixed the merge conflict manually...

[Justin Meltzer]

# modified: app/helpers/application_helper.rb # modified: app/views/layouts/application.html.erb This is what I get referring to application_helper.rb when I run git status I originally cleaned up those <<<<<< in my text editor but I'm guessing that wasn't enough. Not sure what to do now though.

[Justin Meltzer]

ahhh ok! Just figured it out. Thanks digitalross!