Fatal error: Uncaught Error: Class "Symfony\Component\Security\Guard\AbstractGuardAuthenticator" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-guard\Authenticator\AbstractFormLoginAuthenticator.php:27 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-guard\Authenticator\AbstractFormLoginAuthenticator.php on line 27