namespace Drupal\Tests\taxonomy\Functional\Views;
-use Drupal\Component\Utility\Unicode;
use Drupal\Core\Field\FieldStorageDefinitionInterface;
use Drupal\language\Entity\ConfigurableLanguage;
use Drupal\node\Entity\Node;
// Create a vocabulary and add two term reference fields to article nodes.
- $this->fieldName1 = Unicode::strtolower($this->randomMachineName());
+ $this->fieldName1 = mb_strtolower($this->randomMachineName());
$handler_settings = [
'target_bundles' => [