Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /home/exklusivbeautysa/public_html/vendor/contao/calendar-bundle/src/DependencyInjection/ContaoCalendarExtension.php:20 Stack trace: #0 {main} thrown in /home/exklusivbeautysa/public_html/vendor/contao/calendar-bundle/src/DependencyInjection/ContaoCalendarExtension.php on line 20