Help guide for completing the Form 2 "Demande d'immatriculation d'un véhicule automobile" from the MAE
Error message
Warning: cernoverride_preprocess_page(): Argument #2 ($form) must be passed by reference, value given in Drupal\Core\Theme\ThemeManager->render() (line 287 of core/lib/Drupal/Core/Theme/ThemeManager.php).