Fatal error: Uncaught Error: Class "Symfony\Component\Console\Event\ConsoleEvent" not found in /home1/aihika/public_html/gate-manager/vendor/symfony/console/Event/ConsoleAlarmEvent.php:18 Stack trace: #0 {main} thrown in /home1/aihika/public_html/gate-manager/vendor/symfony/console/Event/ConsoleAlarmEvent.php on line 18