get요청 게시글이 로드되지 않는 이유를 모르겠습니다.

[lmg2219]

여태 디버그가 많아 혼자서 해결해 나가느라 버전 업데이트등 이것저것 하면서 이전에 작성해 둔 코드를 한번에 복붙하고 패키지와 필요한 import, 코드작성한 것들 
전부 새 프로젝트로 만들어서 복붙을 했는데 다른 디버그들은 다 해결했는데 이제는 get 요청한 게시글들이 안뜨는 군요 
뭐가 문제인것일 까요 ㅠㅠ

[lmg2219]

오류 메시지가 다르게 떠서 다시 올립니다.

This application is not configured to build on the web.
To add web support to a project, run `flutter create .`.
Launching lib/main.dart on Chrome in debug mode...
Waiting for connection from debug service on Chrome...
This app is linked to the debug service: ws://127.0.0.1:62715/QIpLFAVHUI8=/ws
Debug service listening on ws://127.0.0.1:62715/QIpLFAVHUI8=/ws
Debug service listening on ws://127.0.0.1:62715/QIpLFAVHUI8=/ws
[]
Error: XMLHttpRequest error.
    dart-sdk/lib/_internal/js_dev_runtime/patch/core_patch.dart 942:28                get current
packages/http/src/browser_client.dart 81:22                                       <fn>
dart-sdk/lib/async/zone.dart 1661:54                                              runUnary
dart-sdk/lib/async/future_impl.dart 147:18                                        handleValue
dart-sdk/lib/async/future_impl.dart 784:44                                        handleValueCallback
dart-sdk/lib/async/future_impl.dart 813:13                                        _propagateToListeners
dart-sdk/lib/async/future_impl.dart 575:7                                         [_complete]
dart-sdk/lib/async/stream_pipe.dart 61:11                                         _cancelAndValue
dart-sdk/lib/async/stream.dart 1581:7                                             <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 367:37  _checkAndCall
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 372:39  dcall
dart-sdk/lib/html/dart2js/html_dart2js.dart 37263:58                              <fn>

dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 321:10  createErrorWithStack
dart-sdk/lib/_internal/js_dev_runtime/patch/core_patch.dart 337:28            _throw
dart-sdk/lib/core/errors.dart 120:5                                           throwWithStackTrace
dart-sdk/lib/async/zone.dart 1386:11                                          callback
dart-sdk/lib/async/schedule_microtask.dart 40:11                              _microtaskLoop
dart-sdk/lib/async/schedule_microtask.dart 49:5                               _startMicrotaskLoop
dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 177:15           <fn>

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