Error with https://kscript.github.io/zero/

exception = HTTPConnectionPool(host='www.daikeai.com', port=80): Max retries exceeded with url: /zero/ (Caused by NameResolutionError("HTTPConnection(host='www.daikeai.com', port=80): Failed to resolve 'www.daikeai.com' ([Errno -2] Name or service not known)"))