Fatal error: Uncaught Error: Interface "Drupal\Core\DependencyInjection\ServiceProviderInterface" not found in /home/www/drupal8/test/core/lib/Drupal/Core/Update/UpdateServiceProvider.php:14
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/lib/Drupal/Core/Update/UpdateServiceProvider.php on line 14