Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-02T04:01:39","request-id":"8c27ec87-4e82-4933-9640-bf6af456caf9","client-request-id":"8c27ec87-4e82-4933-9640-bf6af456caf9"}}}"