Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\ConfigurableExtension" not found in /home/bimmertest/BookStack/vendor/itsgoingd/clockwork/Clockwork/Support/Symfony/ClockworkExtension.php:8 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/itsgoingd/clockwork/Clockwork/Support/Symfony/ClockworkExtension.php on line 8