Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-29T21:25:11","request-id":"0633b83c-3a2e-4a37-8b4d-1d2b338b29d6","client-request-id":"0633b83c-3a2e-4a37-8b4d-1d2b338b29d6"}}}"