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