Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-19T05:05:24","request-id":"4ebaa71d-9982-45d1-a9db-e2a33493d6ac","client-request-id":"4ebaa71d-9982-45d1-a9db-e2a33493d6ac"}}}"