Fatal error: Uncaught Error: Class "Twig\Extension\AbstractExtension" not found in /var/www/html/API_Forum/vendor/doctrine/doctrine-bundle/src/Twig/DoctrineExtension.php:36 Stack trace: #0 {main} thrown in /var/www/html/API_Forum/vendor/doctrine/doctrine-bundle/src/Twig/DoctrineExtension.php on line 36