routes.rb

Rails.application.routes.draw do
  devise_for :users
  root 'places#index' 
  resources :places do 
    resources :comments, only: :create
    resources :photos, only: :create
    
  end
  
  # THIS LINE HERE IS MISSING
  resources :users, only: :show

  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end