模式验证失败，出现以下错误@ angular-devkit

Question

While start NgServe I getting the below error. I have cleared the cache multiple times and also updated the NPM. while installing NPM i have not got any issues. Using Angular NGServe Command I'm unable to proceed further. Kindly help in proceeding further and let me know in case of any further details required.

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