Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-14T14:10:56","request-id":"ab2edbb8-e978-4876-8839-6d40958b9979","client-request-id":"ab2edbb8-e978-4876-8839-6d40958b9979"}}}"