Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-10T03:26:19","request-id":"4ac5d419-974d-407f-b47c-eaf5b73d8b92","client-request-id":"4ac5d419-974d-407f-b47c-eaf5b73d8b92"}}}"