Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-02T13:19:11","request-id":"0a3cff32-f69c-4191-bac5-0b58799022a7","client-request-id":"0a3cff32-f69c-4191-bac5-0b58799022a7"}}}"