Fatal error: Uncaught Error: Class "Twig\Extension\AbstractExtension" not found in /home/zdpktgd/ptc/vendor.old/symfony/twig-bridge/Extension/HtmlSanitizerExtension.php:21 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/twig-bridge/Extension/HtmlSanitizerExtension.php on line 21