fix controller

app/controllers/omniauth_callbacks_controller.rb

@@ -1,6 +1,7 @@
 class OmniauthCallbacksController < Devise::OmniauthCallbacksController
   def openid_connect
-    @user = Person.from_omniauth(request.env['omniauth.auth']).save
+    @user = Person.from_omniauth(request.env['omniauth.auth'])
+    @user.save
     sign_in_and_redirect @user, event: :authentication # this will throw if @user is not activated
     set_flash_message(:notice, :success, kind: 'Keycloak') if is_navigational_format?
   end

app/helpers/auth_helper.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-module Helper
+module AuthHelper
   def session_path(_scope)
     new_person_session_path
   end