Issue #3028398 by wengerk, aerzas, czigor: Datatrans Interface (Redirect) is...

Issue #3028398 by wengerk, aerzas, czigor: Datatrans Interface (Redirect) is in the default language instead of Drupal current language

src/PluginForm/DatatransForm.php

@@ -20,13 +20,16 @@ class DatatransForm extends PaymentOffsiteForm {
     $payment = $this->entity;
     /** @var \Drupal\commerce_datatrans\Plugin\Commerce\PaymentGateway\Datatrans $gateway */
     $gateway = $payment->getPaymentGateway()->getPlugin();
+    /** @var \Drupal\Core\Language\LanguageInterface $language */
+    $language = \Drupal::languageManager()->getCurrentLanguage();
 
     $response = $gateway->initializePayment($payment, [
       'redirect' => [
         'successUrl' => $form['#return_url'],
         'cancelUrl' => $form['#cancel_url'],
         'errorUrl' => $form['#return_url'],
-      ]
+      ],
+      'language' => $language->getId(),
     ]);
 
     return $this->buildRedirectForm($form, $form_state, $response->getLocation(), []);