Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface" not found in /srv/www/sites/public/starter-cms/vendor/symfony/event-dispatcher/DependencyInjection/AddEventAliasesPass.php:22 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-cms/vendor/symfony/event-dispatcher/DependencyInjection/AddEventAliasesPass.php on line 22