Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-01-27T10:24:21","request-id":"9559e92d-e76a-447e-bc0e-c2da75f3aa2f","client-request-id":"9559e92d-e76a-447e-bc0e-c2da75f3aa2f"}}}"