Dio로 api 요청 듣고 있는데 에러가 발생합니다 ㅜㅜ

E/flutter ( 4589): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: DioError [DioErrorType.connectTimeout]: Connecting timed out [0ms]

ElevatedButton(
                  onPressed: () async {
                    final rawString = 'test@codefactory.ai:testtest';

                    Codec<String, String> stringToBase64 = utf8.fuse(base64);

                    String token = stringToBase64.encode(rawString);

                    final resp = await dio.post(
                      'http://$ip/auth/login',
                      options: Options(
                        headers: {'authorization': 'Basic $token'},
                      ),
                    );

                    print(resp.data);
                  },
                  style: ElevatedButton.styleFrom(
                    backgroundColor: PRIMARY_COLOR,
                  ),
                  child: Text(
                    '로그인',
                  ),
                ),

코드를 잘못 작성한건가요?ㅜㅜ