Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in /home/itscm/dev.its.cm/webserivesits/vendor/twig/extra-bundle/src/DependencyInjection/Configuration.php:18 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/twig/extra-bundle/src/DependencyInjection/Configuration.php on line 18