app port from old version

config/environments/development.rb

@@ -38,4 +38,7 @@ Rails.application.configure do
 
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
+
+  # Add Rack::LiveReload to the bottom of the middleware stack with the default options.
+  config.middleware.insert_after ActionDispatch::Static, Rack::LiveReload
 end