Fatal error: Uncaught Error: Class 'Twig\Extension\AbstractExtension' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Twig/Extension/ContaoExtension.php:42 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Twig/Extension/ContaoExtension.php on line 42