WebpackOptionsValidationError

Question

在laravel（后端）中更新我的作曲家后，这是我遇到的错误。

我已经尝试过，卸载并重新安装该Webpackage，但是仍然无法正常工作。希望您能帮助我解决这个问题。预先谢谢你。

Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
 - configuration.entry should be one of these:    function | object { <key>: non-empty string | [non-empty string] } | non-empty string | [non-empty string]    -> The entry point(s) of the compilation.    Details:
    * configuration.entry should be an instance of function
      -> A Function returning an entry object, an entry string, an entry array or a promise to these things.
    * configuration.entry['styles'] should be a string.
      -> The string is resolved to a module which is loaded upon startup.
    * configuration.entry['styles'] should not contain the item 'C:\xampp\htdocs\PlainTemplate\frontend\node_modules\bootstrap\dist\css\bootstrap.min.css' twice.
    * configuration.entry should be a string.
      -> An entry point without name. The string is resolved to a module which is loaded upon startup.
    * configuration.entry should be an array:
      [non-empty string] WebpackOptionsValidationError: Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
 - configuration.entry should be one of these:    function | object { <key>: non-empty string | [non-empty string] } | non-empty string | [non-empty string]    -> The entry point(s) of the compilation.    Details:
    * configuration.entry should be an instance of function
      -> A Function returning an entry object, an entry string, an entry array or a promise to these things.
    * configuration.entry['styles'] should be a string.
      -> The string is resolved to a module which is loaded upon startup.
    * configuration.entry['styles'] should not contain the item 'C:\xampp\htdocs\PlainTemplate\frontend\node_modules\bootstrap\dist\css\bootstrap.min.css' twice.
    * configuration.entry should be a string.
      -> An entry point without name. The string is resolved to a module which is loaded upon startup.
    * configuration.entry should be an array:
      [non-empty string]
    at webpack (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\webpack\lib\webpack.js:31:9)
    at Observable.rxjs_1.Observable.obs [as _subscribe] (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\@angular-devkit\build-webpack\src\webpack-dev-server\index.js:37:37)
    at Observable._trySubscribe (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\Observable.js:44:25)
    at Observable.subscribe (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\Observable.js:30:22)
    at C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\util\subscribeTo.js:22:31
    at Object.subscribeToResult (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\util\subscribeToResult.js:10:45)
    at MergeMapSubscriber._innerSub (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\operators\mergeMap.js:82:29)
    at MergeMapSubscriber._tryNext (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\operators\mergeMap.js:76:14)
    at MergeMapSubscriber._next (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\operators\mergeMap.js:59:18)
    at MergeMapSubscriber.Subscriber.next (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\Subscriber.js:67:18)
    at TapSubscriber._next (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\operators\tap.js:65:26)
    at TapSubscriber.Subscriber.next (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\Subscriber.js:67:18)
    at MergeMapSubscriber.notifyNext (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\operators\mergeMap.js:92:26)
    at InnerSubscriber._next (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\InnerSubscriber.js:28:21)
    at InnerSubscriber.Subscriber.next (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\Subscriber.js:67:18)
    at ForkJoinSubscriber.notifyComplete (C:\xampp\htdocs\PlainTemplate\frontend\node_modules\rxjs\internal\observable\forkJoin.js:82:25)