Fatal error: Uncaught Error: Interface 'Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface' not found in /var/www/development/pixtask/vendor/symfony/event-dispatcher/DependencyInjection/AddEventAliasesPass.php:22 Stack trace: #0 {main} thrown in /var/www/development/pixtask/vendor/symfony/event-dispatcher/DependencyInjection/AddEventAliasesPass.php on line 22