Before Rails 5, when we forget to add template for an action, we get ActionView::MissingTemplate exception. 1 2class UsersController < ApplicationController 3 def index 4 @users = User.all 5 end 6end 7 8Started GET "/users" for ::1 at 2016-06-10 17:10:40 +0530 9Processing by UsersController#index as HTML 10Completed 500 Internal Server Error in 5ms 11 12ActionView::MissingTemplate (Missing templat