diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/LanguageFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/LanguageFormatter.php
index 3b43147..95c2164 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/LanguageFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/LanguageFormatter.php
@@ -122,7 +122,12 @@ protected function viewValue(FieldItemInterface $item) {
     // storage by LanguageManager::getLanguages()) or in its native language
     // name. That only depends on formatter settings and no language condition.
     $languages = $this->getSetting('native_language') ? $this->languageManager->getNativeLanguages() : $this->languageManager->getLanguages();
-    return $item->language ? SafeMarkup::checkPlain($languages[$item->language->getId()]->getName()) : '';
+    // Languages like L
+    // Values like \Drupal\Core\Language\LanguageInterface::LANGCODE_NOT_SPECIFIED
+    // and  \Drupal\Core\Language\LanguageInterface::LANGCODE_NOT_APPLICABLE are
+    // not returned from the language manager above.
+    $name = isset($languages[$item->language->getId()]) ? $languages[$item->language->getId()]->getName() : $item->language->getId();
+    return $item->language ? SafeMarkup::checkPlain($name) : '';
   }
 
 }
diff --git a/core/modules/user/src/Tests/Views/UserViewsFieldAccessTest.php b/core/modules/user/src/Tests/Views/UserViewsFieldAccessTest.php
index 37f5597..d7b40fc 100644
--- a/core/modules/user/src/Tests/Views/UserViewsFieldAccessTest.php
+++ b/core/modules/user/src/Tests/Views/UserViewsFieldAccessTest.php
@@ -34,10 +34,6 @@ protected function setUp($import_test_views = TRUE) {
 
   public function testUserFields() {
     ConfigurableLanguage::create([
-      'id' => 'es',
-      'name' => 'Spanish',
-    ])->save();
-    ConfigurableLanguage::create([
       'id' => 'fr',
       'name' => 'French',
     ])->save();
diff --git a/core/modules/views/src/Tests/Handler/FieldFieldAccessTestBase.php b/core/modules/views/src/Tests/Handler/FieldFieldAccessTestBase.php
index 5554a8a..a0c2bd7 100644
--- a/core/modules/views/src/Tests/Handler/FieldFieldAccessTestBase.php
+++ b/core/modules/views/src/Tests/Handler/FieldFieldAccessTestBase.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\views\Tests\Handler;
 
+use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\user\Entity\Role;
 use Drupal\user\Entity\User;
 use Drupal\views\Entity\View;
@@ -35,7 +36,7 @@
   /**
    * {@inheritdoc}
    */
-  public static $modules = ['user'];
+  public static $modules = ['user', 'language'];
 
   /**
    * {@inheritdoc}
@@ -43,6 +44,10 @@
   protected function setUp($import_test_views = TRUE) {
     parent::setUp($import_test_views);
 
+    // Make the site at least multilingual to have a working language field
+    // handler.
+    ConfigurableLanguage::create(['id' => 'es', 'title' => 'Spain title'])->save();
+
     $this->installEntitySchema('user');
 
     $role_with_access = Role::create([
diff --git a/core/modules/views/tests/src/Unit/EntityViewsDataTest.php b/core/modules/views/tests/src/Unit/EntityViewsDataTest.php
index 56d1596..033a500 100644
--- a/core/modules/views/tests/src/Unit/EntityViewsDataTest.php
+++ b/core/modules/views/tests/src/Unit/EntityViewsDataTest.php
@@ -792,7 +792,7 @@ protected function assertNumericField($data) {
    *   The views data to check.
    */
   protected function assertLanguageField($data) {
-    $this->assertEquals('field', $data['field']['id']);
+    $this->assertEquals('field_language', $data['field']['id']);
     $this->assertEquals('language', $data['filter']['id']);
     $this->assertEquals('language', $data['argument']['id']);
     $this->assertEquals('standard', $data['sort']['id']);