diff -u b/core/modules/locale/lib/Drupal/locale/ParamConverter/LocaleAdminPathConfigEntityConverter.php b/core/modules/locale/lib/Drupal/locale/ParamConverter/LocaleAdminPathConfigEntityConverter.php
--- b/core/modules/locale/lib/Drupal/locale/ParamConverter/LocaleAdminPathConfigEntityConverter.php
+++ b/core/modules/locale/lib/Drupal/locale/ParamConverter/LocaleAdminPathConfigEntityConverter.php
@@ -10,6 +10,7 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 use Drupal\Core\Config\ConfigFactory;
+use Drupal\Core\Entity\EntityManagerInterface;
 use Drupal\Core\ParamConverter\EntityConverter;
 use Drupal\Core\ParamConverter\ParamConverterInterface;