Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Extension\Extension' not found in /home/benjamincb/demos/acdg-site/vendor/contao/news-bundle/src/DependencyInjection/ContaoNewsExtension.php:20 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/news-bundle/src/DependencyInjection/ContaoNewsExtension.php on line 20