Fatal error: Uncaught Error: Class "FOS\UserBundle\Security\UserProvider" not found in C:\xampp\htdocs\BK\bateriasec\vendor\friendsofsymfony\user-bundle\Security\EmailProvider.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\BK\bateriasec\vendor\friendsofsymfony\user-bundle\Security\EmailProvider.php on line 14