Fatal error: Uncaught Error: Class 'Twig\Extension\AbstractExtension' not found in /home/benjamincb/demos/acdg/vendor/symfony/twig-bridge/Extension/CsrfExtension.php:21 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/symfony/twig-bridge/Extension/CsrfExtension.php on line 21