diff -u b/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php b/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php --- b/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php +++ b/core/modules/locale/lib/Drupal/locale/Form/ImportForm.php @@ -91,7 +91,11 @@ $form['file'] = array( '#type' => 'file', '#title' => $this->t('Translation file'), - '#description' => theme('file_upload_help', array('description' => $this->t('A Gettext Portable Object file.'), 'upload_validators' => $validators)), + '#description' => array( + '#type' => 'file_upload_help', + '#description' => $this->t('A Gettext Portable Object file.'), + '#upload_validators' => $validators, + ), '#size' => 50, '#upload_validators' => $validators, '#attributes' => array('class' => array('file-import-input')),