Error: tonic::transport::Error after Start kaspa-miner from cargo in Ubuntu 22.04

[jkdi]

Hello, i get this error after try to start kaspa-miner in ubuntu 22.04:

Error: tonic::transport::Error(Transport, hyper::Error(Connect, ConnectError("tcp connect error", Os { code: 111, kind: ConnectionRefused, message: "Connection refused" })))

any solutions?