error

Routing Error

No route matches {:action=>"show", :controller=>"admin/tasks"}

routes.rb

ExactApp::Application.routes.draw do 
  #get "task/index"
    
  devise_for :users, :path => "admin", 
    :path_names => { 
      :sign_in => 'sign_in', 
      :sign_out => 'sign_out', 
      :password => 'password'
    }

  devise_for :contractors, :path => "login", 
    :path_names => { 
      :sign_in => 'sign_in', 
      :sign_out => 'sign_out', 
      :password => 'password'
    }

  authenticated :user do
    root :to => "admin/dashboard#index"
  end

  namespace :admin do
    root :to => "dashboard#index"
    resources "clients" do
      member do  
        post 'posts', :action => 'wall_posts', :as => 'wall_posts'
        delete 'posts/:post_id', :action => 'wall_post_destroy', :as => 'wall_post'
      end
    end
    namespace :clients do
      post ':client_id/departments', 
        :controller => :departments, 
        :action => 'create',
        :as => 'departments'
        
      delete ':client_id/departments/:id', 
        :controller => :departments,
        :action => 'destroy',
        :as => 'department'
        
      post ':client_id/departments/:department_id/contacts',
        :controller => :contacts,
        :action => 'create',
        :as => 'department_contacts'
        
      delete ':client_id/departments/:department_id/contacts/:id',
        :controller => :contacts,
        :action => 'destroy',
        :as => 'department_contact'
    end
    resources "contractors" do
      member do  
        post 'posts', :action => 'wall_posts', :as => 'wall_posts'
        delete 'posts/:post_id', :action => 'wall_post_destroy', :as => 'wall_post'
      end
    end
    resources "timesheets"
    resources "tasks"
  end

  root :to => redirect("/login") # no public-facing controller
  get "/login" => redirect("/login/sign_in")
  get "/admin/timesheets", :controller => 'admin/timesheets', :action => 'index', :as => :contractor_root


end