我收到错误“NPM 脚本‘start’退出时未指示 Angular CLI 正在监听请求。错误输出为：未知选项：‘--extract-css’”

我有一个项目，我已经有一段时间没做了。它基于 Visual Studio angular 模板。启动项目时，我收到错误：

An unhandled exception occurred while processing the request. AggregateException: One or more errors occurred. (One or more errors occurred. (The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: Unknown option: '--extract-css'

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! [email protected] start: ng serve --extract-css "--port" "54197" npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the [email protected] start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:

)) System.Threading.Tasks.Task.GetResultCore(bool waitCompletionNotification)

InvalidOperationException: The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: Unknown option: '--extract-css'

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! [email protected] start: ng serve --extract-css "--port" "54197" npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the [email protected] start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:

Microsoft.AspNetCore.SpaServices.AngularCli.AngularCliMiddleware+d__3.MoveNext()

我希望能够从 Visual Studio 运行 angular 模板项目。通过 angular cli 运行时，它运行良好。