Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-08T15:01:51","request-id":"ec0c619f-9f67-43e6-9365-7cdc8bf61051","client-request-id":"ec0c619f-9f67-43e6-9365-7cdc8bf61051"}}}"