Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Event\ConsoleEvent' not found in /var/www/up.tantal-metall.com/yii_up/vendor/symfony/console/Event/ConsoleCommandEvent.php:19 Stack trace: #0 {main} thrown in /var/www/up.tantal-metall.com/yii_up/vendor/symfony/console/Event/ConsoleCommandEvent.php on line 19