Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/www/drupal8/test/core/modules/rest/src/EventSubscriber/EntityResourcePostRouteSubscriber.php:13
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/rest/src/EventSubscriber/EntityResourcePostRouteSubscriber.php on line 13