Fatal error: Uncaught Error: Class 'Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\JsonLoginFactory' not found in C:\xampp\htdocs\plugins\Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\JsonLoginLdapFactory.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\plugins\Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\JsonLoginLdapFactory.php on line 21