运行“ flutter pub upgrade”时出现错误。
HTTP error 404: Not Found
package:pub/src/http.dart 218:5 _ThrowingClient.send
This is an unexpected error. Please run
pub --trace '--verbosity=warning' upgrade --no-precompile
and include the logs in an issue on https://github.com/dart-lang/pub/issues/new
尝试添加各个参数无效，因为我正在使用： 扑吧升级。
是否可以将命令行参数添加到“ flutter pub升级”，然后传递给“ pub升级”？
如注释flutter pub upgrade -v中所指定，正在传递其他参数。但是，它没有给我任何提示是什么问题。以下是flutter pub upgrade -v的输出：
$ flutter pub升级-v
[+31 ms]执行：[c：\ bin \ flutter] git log -n 1 --pretty = format：％H
[+88毫秒]退出代码0，来自：git log -n 1 --pretty = format：％H
[+1毫秒] b712a172f9694745f50505c93340883493b505e5
[]执行：[c：\ bin \ flutter] git describe --match v *。。 --first-parent --long --tags
[+73毫秒]从以下代码退出代码0：git describe --match v *。。 --first-parent --long --tags
[] v1.7.8 + hotfix.3-0-gb712a172f
[+10毫秒]执行：[c：\ bin \ flutter] git rev-parse --abbrev-ref --symbolic @ {u}
[+68 ms]从以下位置退出代码0：git rev-parse --abbrev-ref --symbolic @ {u}
[]起源/稳定
[]执行：[c：\ bin \ flutter] git ls-remote --get-url origin
[+60毫秒]退出代码0，来自：git ls-remote --get-url origin
[] https://github.com/flutter/flutter.git
[+90 ms]执行：[c：\ bin \ flutter] git rev-parse --abbrev-ref HEAD
[+66 ms]从以下位置退出代码0：git rev-parse --abbrev-ref HEAD
[]稳定
[+70 ms]不需要'FlutterWebSdk'的工件实例，跳过更新。
[+6 ms]不需要'WindowsEngineArtifacts'的工件实例，跳过更新。
[+2 ms]不需要'MacOSEngineArtifacts'的工件实例，跳过更新。
[+1毫秒]不需要'LinuxEngineArtifacts'的工件实例，跳过更新。
[+1 ms]不需要'LinuxFuchsiaSDKArtifacts'的工件实例，跳过更新。
[+1 ms]不需要'MacOSFuchsiaSDKArtifacts'的工件实例，跳过更新。
[+6毫秒]在xxxxx中运行“ flutter pub upgrade” ...
[+3毫秒]使用c：\ bin \ flutter.pub-cache作为发布缓存。
[+1毫秒]执行：[D：\ Projects \ xxxxx] c：\ bin \ flutter \ bin \ cache \ dart-sdk \ bin \ pub.bat --verbosity = warning-详细升级--no-precompile
[+7197毫秒] HTTP错误404：未找到
[+11毫秒]包：pub / src / http.dart 218：5 _ThrowingClient.send
[+1 ms] =====异步间隔==========================
[+1毫秒] dart：async _AsyncAwaitCompleter.completeError
[+1毫秒]包：pub / src / http.dart _ThrowingClient.send
[+1 ms] =====异步间隔==========================
[+1毫秒] dart：async _asyncThenWrapperHelper
[+1毫秒]包：pub / src / http.dart _ThrowingClient.send
[+1 ms]软件包：http_throttle / http_throttle.dart 33:31 ThrottleClient.send
[+1 ms] =====异步间隔==========================
[+1毫秒] dart：async _asyncThenWrapperHelper
[+1毫秒]程序包：http_throttle / http_throttle.dart ThrottleClient.send
[+1毫秒]包：pub / src / source / hosted.dart 322：37 BoundHostedSource._download
[+1 ms] =====异步间隔==========================
[+1毫秒] dart：async _asyncThenWrapperHelper
[]包：pub / src / entrypoint.dart Entrypoint.acquireDependencies
[+1毫秒]软件包：pub / src / command / upgrade.dart 43:22 UpgradeCommand.run
[+1毫秒]这是意外错误。请运行
[+1毫秒] pub --trace'--verbosity = warning'--verbose upgrade --no-precompile
[]，并将日志包含在https://github.com/dart-lang/pub/issues/new的问题中
[+20 ms]发布升级失败（69）-尝试在1秒内重试1 ...