Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-05T12:54:58","request-id":"f6ce9bb5-1633-48b1-bb7b-ea4314a42ec6","client-request-id":"f6ce9bb5-1633-48b1-bb7b-ea4314a42ec6"}}}"