Routing error with multiple models - devise rails

Question

Actually I am using two models for my app that is User and Admin and I followed every steps to be dealt while using devise gem.

And I would like to have multiple sign_up. When User sign_up, must be redirected to User sign_up page and when Admin sign_up, must be redirected to Admin sign_up page in order to make registrations.

When I execute sign_up link under User it gives me routing error which is as below;

Routing Error
uninitialized constant Users::RegistrationsController

And When I execute sign_up link under Admin it gives me routing error which is as below;

Routing Error
uninitialized constant Admins::RegistrationsController

routes.rb

Rails.application.routes.draw do

    root "home#index"

    devise_for :users, controllers: {
        sessions: 'users/sessions',
        registrations: 'users/registrations'
    }   

    get '/aslani' => 'aslani#index', as: :authenticated_user_root

    devise_for :admins, controllers: {
        sessions: 'admins/sessions',
        registrations: 'admins/registrations'
    }


    get '/kola' => 'kola#index', as: :authenticated_admin_root
end

aslani/index.html.erb

<% if user_signed_in? %>
      I am Aslani.
       <%= link_to 'Log out', destroy_user_session_path, method: :delete %>
    <% else %>
      <%= link_to 'Log In', new_user_session_path %>
      <%= link_to 'Sign Up', new_user_registration_path %>
<% end %>

kola/index.html.erb

<% if admin_signed_in? %>
       I am Kola.
      <%= link_to 'Log out', destroy_admin_session_path, method: :delete %>
    <% else %>
      <%= link_to 'Log In', new_admin_session_path %></li>
      <%= link_to 'Sign Up', new_admin_registration_path %>
<% end %>

app/controllers/users/sessions_controller.rb

class Users::SessionsController < Devise::SessionsController
    def new
        super
    end

    def create 
        self.resource = warden.authenticate!(auth_options) 
        sign_in(resource_name, resource) 
        yield resource if block_given? 
        respond_with resource, location: after_sign_in_path_for(resource) 
    end

end

app/controllers/admins/sessions_controller.rb

class Admins::SessionsController < Devise::SessionsController
    def new
        super
    end

    def create 
        self.resource = warden.authenticate!(auth_options) 
        sign_in(resource_name, resource) 
        yield resource if block_given? 
        respond_with resource, location: after_sign_in_path_for(resource) 
    end

end

app/controllers/users/registrations_controller.rb

class Users::RegistrationsController < Devise::RegistrationsController
  def new
    super
  end

  def create 
        super
    end

  def update
    super
  end
end 

app/controllers/admins/registrations_controller.rb

class Admins::RegistrationsController < Devise::RegistrationsController
  def new
    super
  end

  def create 
         super
    end

  def update
    super
  end
end 

Any suggestions are most welcome.

Thank you in advance.

Answer 1

Per discussion with @Muhammad

He is getting missing template admins/registrations/create error, To solve this, either add super or delete create action because he has overridden nothing

class Users::RegistrationsController < Devise::RegistrationsController
  def new
    super
  end  

  def create
    super
  end

  def update
    super
  end
end