undefined method `dump' for Psych:Module

[elfassy]

I'm getting this error on heroku, any idea where this might come from? I'm using version 0.7.6

undefined method `dump' for Psych:Module
 vendor/bundle/ruby/1.9.1/gems/ice_cube-0.7.6/lib/ice_cube/schedule.rb:256:in `to_yaml'

Thanks!

[elfassy]

I think it might be because of the ruby version (1.9.1) on heroku. I've added the Psych gem (https://github.com/tenderlove/psych) and it works now. Hopes this helps someone :)

[seejohnrun]

Ah yes, if it can find Psych, it'll try to use it - I ownder why Pysch#dump wasn't defined though

[benaskins]

I had the same issue deploying to Heroku this morning. I've been deploying an app with ice_cube to heroku for weeks without issue.

The problem was solved by adding psych to my Gemfile. This introduced some issues with bundling locally, which was resolved by installing bundler-1.1.rc.7.

I suspect this problem has arisen due to a recent change in the Heroku environment.

[seejohnrun]

Thanks for the follow-up ben, must appreciated