Fatal error: Uncaught Error: Interface "Drupal\Core\DependencyInjection\ContainerInjectionInterface" not found in /home/www/drupal8/test/core/modules/block/src/Controller/CategoryAutocompleteController.php:15 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/block/src/Controller/CategoryAutocompleteController.php on line 15