Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/www/drupal8/test/core/modules/layout_builder/src/EventSubscriber/BlockComponentRenderArray.php:24
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/layout_builder/src/EventSubscriber/BlockComponentRenderArray.php on line 24