Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-03-28T02:20:24","request-id":"ff6dd445-6a7d-4dee-bbbc-9f623072f3c5","client-request-id":"ff6dd445-6a7d-4dee-bbbc-9f623072f3c5"}}}"