Fatal error: Uncaught Error: Class "Symfony\Component\Security\Http\Authenticator\AbstractAuthenticator" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-http\Authenticator\AbstractLoginFormAuthenticator.php:26 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-http\Authenticator\AbstractLoginFormAuthenticator.php on line 26