Fatal error: Uncaught Error: Interface "Drupal\Component\Plugin\PluginManagerInterface" not found in /home/www/drupal8/test/core/modules/config_translation/src/ConfigMapperManagerInterface.php:11 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/config_translation/src/ConfigMapperManagerInterface.php on line 11