Working with mongoid error unitialized constant

[matiasfha]

I'm workind with mongoid (learning) and devise i follow up the "how to" but when i try to test i have this error uninitialized constant Devise::Twitter

This error occurred while loading the following files: config/routes.rb

Mi routes.rb

Weird::Application.routes.draw do root :to => "home#index" devise_for :users do match '/users/sign_in/twitter' => Devise::Twitter::Rack::Signin match '/users/connect/twitter' => Devise::Twitter::Rack::Connect end resources :users, :only => :show end

I can't find the problem.... ideas?