NameError: uninitialized constant I18n::Config::Backend on Ruby 2.3.0 with Heroku

[cmalpeli]

I just upgraded Ruby 2.2.2 to 2.3.0. Whenever I try to run a rake task I get the following:

NameError: uninitialized constant I18n::Config::Backend
/Users/cman/.rvm/gems/ruby-2.3.0/gems/i18n-0.7.0/lib/i18n/config.rb:19:in `backend'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/i18n-0.7.0/lib/i18n.rb:147:in `translate'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/actionview-4.2.5.1/lib/action_view/helpers/translation_helper.rb:69:in `translate'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/i18n-0.7.0/lib/i18n/config.rb:19:in `backend'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/i18n-0.7.0/lib/i18n.rb:147:in `translate'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/actionview-4.2.5.1/lib/action_view/helpers/translation_helper.rb:69:in `translate'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/engine.rb:658:in `block in run_tasks_blocks'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/engine.rb:658:in `each'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/engine.rb:658:in `run_tasks_blocks'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/application.rb:452:in `run_tasks_blocks'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/engine.rb:453:in `load_tasks'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/railtie.rb:194:in `public_send'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/railties-4.2.5.1/lib/rails/railtie.rb:194:in `method_missing'
/Users/cman/Dropbox/rails_projects/job_board/Rakefile:9:in `<top (required)>'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/rake_module.rb:28:in `load'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/rake_module.rb:28:in `load_rakefile'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:689:in `raw_load_rakefile'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:94:in `block in load_rakefile'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:93:in `load_rakefile'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:77:in `block in run'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/lib/rake/application.rb:75:in `run'
/Users/cman/.rvm/gems/ruby-2.3.0/gems/rake-10.5.0/bin/rake:33:in `<top (required)>'
/Users/cman/.rvm/gems/ruby-2.3.0/bin/rake:23:in `load'
/Users/cman/.rvm/gems/ruby-2.3.0/bin/rake:23:in `<main>'
/Users/cman/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
/Users/cman/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `<main>'

[cmalpeli]

Just updated this to reflect that this is not related to Heroku. The error occurs every time I attempt to run a rake task.

[emilianodellacasa]

Have you included ActionView::Helpers::TranslationHelper in a rake atsk to use the t helper?

Here on stack overflow there is someone experiencing a similar issue

[cmalpeli]

thanks @emilianodellacasa that was actually my SO pos ;) I'm going to close this out.