```ruby
Calagator::Engine.routes.draw do
  get 'omfg' => 'site#omfg'
  get 'hello' => 'site#hello'

  get 'about' => 'site#about'

  get 'opensearch.:format' => 'site#opensearch'
  get 'defunct' => 'site#defunct'

  get 'admin' => 'admin#index'
  get "admin/index"
  get "admin/events"
  post "lock_event" => "admin#lock_event"

  resources :events do
    collection do
      post :squash_many_duplicates
      get :search
      get :duplicates
      get 'tag/:tag', to: :search, as: :tag
    end

    member do
      get :clone
    end
  end

  resources :sources do
    collection do
      post :import
    end
  end

  resources :venues do
    collection do
      post :squash_many_duplicates
      get :map
      get :duplicates
      get :autocomplete
      get 'tag/:tag', to: :search, as: :tag
    end
  end

  resources :versions, :only => [:edit]
  resources :changes, :controller => 'paper_trail_manager/changes'
  get 'recent_changes' => redirect("/changes")
  get 'recent_changes.:format' => redirect("/changes.%{format}")

  get 'css/:name' => 'site#style'
  get 'css/:name.:format' => 'site#style'

  get '/' => 'site#index', :as => :root
  get '/index' => 'site#index'
  get '/index.:format' => 'site#index'
end
```

Fix controller namespace for /changes route
user
```ruby
Calagator::Engine.routes.draw do
  get 'omfg' => 'site#omfg'
  get 'hello' => 'site#hello'

  get 'about' => 'site#about'

  get 'opensearch.:format' => 'site#opensearch'
  get 'defunct' => 'site#defunct'

  get 'admin' => 'admin#index'
  get "admin/index"
  get "admin/events"
  post "lock_event" => "admin#lock_event"

  resources :events do
    collection do
      post :squash_many_duplicates
      get :search
      get :duplicates
      get 'tag/:tag', to: :search, as: :tag
    end

    member do
      get :clone
    end
  end

  resources :sources do
    collection do
      post :import
    end
  end

  resources :venues do
    collection do
      post :squash_many_duplicates
      get :map
      get :duplicates
      get :autocomplete
      get 'tag/:tag', to: :search, as: :tag
    end
  end

  resources :versions, :only => [:edit]
  resources :changes, :controller => '/paper_trail_manager/changes'
  get 'recent_changes' => redirect("/changes")
  get 'recent_changes.:format' => redirect("/changes.%{format}")

  get 'css/:name' => 'site#style'
  get 'css/:name.:format' => 'site#style'

  get '/' => 'site#index', :as => :root
  get '/index' => 'site#index'
  get '/index.:format' => 'site#index'
end
```
assistant