Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-18T02:52:39","request-id":"e928f7da-1ef8-4f03-846d-23f56fef4810","client-request-id":"e928f7da-1ef8-4f03-846d-23f56fef4810"}}}"