Package sendinblue/api-v3-sdk is abandoned, you should avoid using it. Use getbrevo/brevo-php instead.

Hi, I've created the following issue with a patch to also solve this problem: https://www.drupal.org/project/sendinblue_api/issues/3432945 🐛 Module does not work out of the box. Update to Brevo API and fix Webform handler Active

Fixed on release 1.2.0 → .