Fatal error: Uncaught Error: Interface "Symfony\Component\Console\Command\SignalableCommandInterface" not found in /home/justin/projects/calsyncv2/calsync/vendor/symfony/console/Command/InvokableCommand.php:36 Stack trace: #0 {main} thrown in /home/justin/projects/calsyncv2/calsync/vendor/symfony/console/Command/InvokableCommand.php on line 36