Fatal error: Uncaught Error: Class "Symfony\Component\Console\Event\ConsoleEvent" not found in C:\Apache24_x64\htdocs\origin_cms8\vendor\symfony\console\Event\ConsoleCommandEvent.php:19 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\origin_cms8\vendor\symfony\console\Event\ConsoleCommandEvent.php on line 19