Fatal error: Class 'Symfony\Component\Console\Event\ConsoleEvent' not found in /var/www/html/dev/spa/vendor/symfony/console/Symfony/Component/Console/Event/ConsoleCommandEvent.php on line 22

Call Stack:
    0.0003     229376   1. {main}() /var/www/html/dev/spa/vendor/symfony/console/Symfony/Component/Console/Event/ConsoleCommandEvent.php:0