运行报错啊，怎么解决呢？

[724607039]

Compiler message:
../../.pub-cache/hosted/pub.flutter-io.cn/dio-2.2.2/lib/src/dio_http_headers.dart:55:8: Error: The method 'DioHttpHeaders.add' has fewer named arguments than those of overridden method 'HttpHeaders.add'.
void add(String name, value) {
^
org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:694:8: Context: This is the overridden method ('add').
void add(String name, Object value,
^
../../.pub-cache/hosted/pub.flutter-io.cn/dio-2.2.2/lib/src/dio_http_headers.dart:70:8: Error: The method 'DioHttpHeaders.set' has fewer named arguments than those of overridden method 'HttpHeaders.set'.
void set(String name, Object value) {
^
org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:703:8: Context: This is the overridden method ('set').
void set(String name, Object value,
^
../../.pub-cache/hosted/pub.flutter-io.cn/cached_network_image-0.8.0/lib/src/cached_network_image_provider.dart:42:24: Error: The method 'CachedNetworkImageProvider.load' has fewer positional arguments than those of overridden method 'ImageProvider.load'.
ImageStreamCompleter load(CachedNetworkImageProvider key) {
^
../../flutter/packages/flutter/lib/src/painting/image_provider.dart:574:24: Context: This is the overridden method ('load').
ImageStreamCompleter load(T key, DecoderCallback decode);
^
Project evaluation failed including an error in afterEvaluate {}. Run with --stacktrace for details of the afterEvaluate {} error.

FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring project ':connectivity'.

Could not resolve all artifacts for configuration ':connectivity:classpath'.
Could not download guava.jar (com.google.guava:guava:26.0-jre)
> Could not get resource 'https://jcenter.bintray.com/com/google/guava/guava/26.0-jre/guava-26.0-jre.jar'.
> Read timed out
Could not download kotlin-reflect.jar (org.jetbrains.kotlin:kotlin-reflect:1.3.11)
> Could not get resource 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.11/kotlin-reflect-1.3.11.jar'.
> Could not GET 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.11/kotlin-reflect-1.3.11.jar'.
> Received close_notify during handshake
Could not download kotlin-stdlib.jar (org.jetbrains.kotlin:kotlin-stdlib:1.3.11)
> Could not get resource 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib/1.3.11/kotlin-stdlib-1.3.11.jar'.
> Could not GET 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib/1.3.11/kotlin-stdlib-1.3.11.jar'.
> Received close_notify during handshake

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 1m 26s
Exception: Gradle task assembleDebug failed with exit code 1

[dev-zl]

一样 ，这个垃圾的东西 就这 都运行不起来

[vjHuang]

1.升级这两个包：
dio: ^3.0.0
cached_network_image: ^2.2.0

2.把报错的几个类都注释掉
HeaderInterceptors
LogsInterceptors
ResponseInterceptors
3.把HttpManager里引用这3个类的地方注释掉。

就能跑了。

[derekzhan]

dio: ^3.0.0
cached_network_image: ^2.2.0

2.把报错的几个类都改下代码 return super.onxxx(xxx)
HeaderInterceptors ：
LogsInterceptors：
ResponseInterceptors