模式验证失败，出现以下错误@ angular-devkit

Question

启动NgServe时出现以下错误。 我已多次清除缓存并更新了NPM。 在安装NPM时，我没有任何问题。 使用Angular NGServe命令，我无法继续进行操作。 请帮助进一步进行，如有任何其他详细信息，请告知我。

ng serve
Your global Angular CLI version (7.3.9) is greater than your local
version (7.1.4). The local Angular CLI version is used.

To disable this warning use "ng config -g cli.warnings.versionMismatch false".
Schema validation failed with the following errors:
  Data path ".builders['app-shell']" should have required property 'class'.
Error: Schema validation failed with the following errors:
  Data path ".builders['app-shell']" should have required property 'class'.
    at MergeMapSubscriber._registry.compile.pipe.operators_1.concatMap.validatorResult [as project] 
    (C:\workspace\web\space\POC\app-ui\node_modules\@angular\cli\node_modules\@angular-devkit\core\src\workspace\workspace.js:215:42)
    at MergeMapSubscriber._tryNext (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\operators\mergeMap.js:69:27)
    at MergeMapSubscriber._next (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\operators\mergeMap.js:59:18)
    at MergeMapSubscriber.Subscriber.next (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\Subscriber.js:67:18)
    at MergeMapSubscriber.notifyNext (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\operators\mergeMap.js:92:26)
    at InnerSubscriber._next (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\InnerSubscriber.js:28:21)
    at InnerSubscriber.Subscriber.next (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\Subscriber.js:67:18)
    at MapSubscriber._next (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\operators\map.js:55:26)
    at MapSubscriber.Subscriber.next (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\Subscriber.js:67:18)
    at SwitchMapSubscriber.notifyNext (C:\workspace\web\space\POC\app-ui\node_modules\rxjs\internal\operators\switchMap.js:86:26)

Answer 1

ng update @ angular / cli @ angular / core试试这个