Fatal error: Uncaught Error: Interface "Drupal\Core\DependencyInjection\ContainerInjectionInterface" not found in /home/www/drupal8/test/core/modules/system/src/Controller/SystemInfoController.php:13 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/system/src/Controller/SystemInfoController.php on line 13