Failing publish new package. HTTP Error

[Verdy Bangkit]

Description

Cannot upload new package in my vps

Log

IO  : Retry #2 for POST http://localhost:4000/api/packages/versions/newUpload...
IO  : HTTP POST http://localhost:4000/api/packages/versions/newUpload
    | content-type: multipart/form-data; boundary=dart-http-boundary-LTvBaD6KtuMV-CecDYvS_TT-_a1cQjTGqc+qtr.F+pU+wSoT3Eu
    | user-agent: Dart pub 2.16.2
IO  : HTTP error:
    | SocketException: Connection refused (OS Error: Connection refused, errno = 61), address = localhost, port = 63438
    |
    | dart:_http                                                       _HttpClient.openUrl
    | package:http/src/io_client.dart 35:38                            IOClient.send
    | package:pub/src/http.dart 68:43                                  _PubHttpClient.send
    | package:http/retry.dart 109:33                                   RetryClient.send