Flutter Web-拨打TCP 127.0.0.1:8080：连接：连接被拒绝

Question

每当我从VS Code运行此命令webdev serve --auto restart并通过http://127.0.0.1:8080/测试该网站时，我都在开发新的Flutter网站。

但是，当我在 main.dart 文件（小部件的常规编辑）中进行了更新，并再次运行前面的命令时，它将引发此错误

  

拨号TCP 127.0.0.1:8080：连接：连接被拒绝

终端输出是..

[INFO] Reading cached asset graph completed, took 543ms
[INFO] Checking for updates since last build completed, took 1.9s
[INFO] Serving `web` on http://127.0.0.1:8080
[INFO] Running build completed, took 531ms
[INFO] Caching finalized dependency graph completed, took 302ms
[INFO] Succeeded after 867ms with 0 outputs (0 actions)
[INFO] -------------------------------------------------------------------

我的dart文件只有普通的小部件。