Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-07T00:12:33","request-id":"5737788b-9764-4bb7-a621-cd4095c1ac2b","client-request-id":"5737788b-9764-4bb7-a621-cd4095c1ac2b"}}}"