Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Http\Authenticator\AbstractAuthenticator' not found in /home/benjamincb/demos/acdg-site/vendor/symfony/security-http/Authenticator/AbstractLoginFormAuthenticator.php:26 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/symfony/security-http/Authenticator/AbstractLoginFormAuthenticator.php on line 26