adding devise

app/controllers/application_controller.rb

@@ -1,2 +1,9 @@
 class ApplicationController < ActionController::Base
+  before_action :configure_permitted_parameters, if: :devise_controller?
+
+   protected
+
+   def configure_permitted_parameters
+     devise_parameter_sanitizer.permit(:sign_up, keys: [:name])
+   end
 end