Rails 3: uninitialized constant IRB::ReadlineInputMethod::Readline (NameError) in Heroku

Question

Ever since we updated to Rails 3.2.13 we\'ve been unable to start the heroku rails console. The server is working just fine, but when we try to run the console, it gives the fol

Answer 1

Just experienced this myself. As it turns out the rb-readline gem bumped a version that causes rails console, and other things to fail. Try locking it to '~> 0.4.2'.

gem 'rb-readline', '~> 0.4.2'