Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-26T13:30:09","request-id":"d5e675da-1253-40dd-876d-3aa0c1b91939","client-request-id":"d5e675da-1253-40dd-876d-3aa0c1b91939"}}}"