Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-08T08:14:38","request-id":"f0f94b0d-f699-44d2-9c4f-37cbd64a5959","client-request-id":"f0f94b0d-f699-44d2-9c4f-37cbd64a5959"}}}"