diff --git c/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php w/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php
index 43e3fd8..acfbb03 100644
--- c/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php
+++ w/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php
@@ -10,6 +10,7 @@
 use Drupal\Core\Form\FormBase;
 use Drupal\Core\Language\Language;
 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**