Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-12T05:50:48","request-id":"bf7cfb66-0b20-42cd-a5dd-49ae81ec26de","client-request-id":"bf7cfb66-0b20-42cd-a5dd-49ae81ec26de"}}}"