Fatal error: Uncaught Error: Class 'Twig\Extension\AbstractExtension' not found in C:\xampp\htdocs\plugins\Symfony\Bridge\Twig\Extension\CsrfExtension.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\plugins\Symfony\Bridge\Twig\Extension\CsrfExtension.php on line 21