Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-28T19:50:59","request-id":"9c628153-f032-414a-9740-f4f9a7fd8f14","client-request-id":"9c628153-f032-414a-9740-f4f9a7fd8f14"}}}"