Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-03-05T03:33:16","request-id":"6982ee70-c79d-44a6-8b8c-bd44168a8251","client-request-id":"6982ee70-c79d-44a6-8b8c-bd44168a8251"}}}"