Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in I:\www\pvcDisplay\vendor\friendsofphp\php-cs-fixer\src\Runner\Event\FileProcessed.php:26 Stack trace: #0 {main} thrown in I:\www\pvcDisplay\vendor\friendsofphp\php-cs-fixer\src\Runner\Event\FileProcessed.php on line 26