Fatal error: Uncaught Error: Class 'Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\AbstractFactory' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/DependencyInjection/Security/ContaoLoginFactory.php:21 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/DependencyInjection/Security/ContaoLoginFactory.php on line 21