Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-19T08:56:01","request-id":"0ff53be7-5da3-460c-871a-dbe72c48d026","client-request-id":"0ff53be7-5da3-460c-871a-dbe72c48d026"}}}"