cannot load such file — readline (LoadError) when running heroku create --stack cedar

Question

I\'m trying to deploy my Rails application to Heroku to test it out by following these instructions:

http://devcenter.heroku.com/articles/rails3#prerequisites

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Answer 1

Made it work for me!

gem 'rb-readline', "~> 0.5.0.pre.1", :require => false