Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/itscm/dev.its.cm/webserivesits/vendor/twig/extra-bundle/src/DependencyInjection/TwigExtraExtension.php:23 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/twig/extra-bundle/src/DependencyInjection/TwigExtraExtension.php on line 23