Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in D:\workspaces\liZiPingBack\vendor\twig\extra-bundle\DependencyInjection\TwigExtraExtension.php:24 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\twig\extra-bundle\DependencyInjection\TwigExtraExtension.php on line 24