cmd报错 已经安装了stylus 我按照老师的格式写的 但是样式里面 我不知道怎么弄得 自己又更改回style样式了

C:\Users\Administrator\Desktop\shizhan>npm run start

> shizhan@1.0.0 start C:\Users\Administrator\Desktop\shizhan

> npm run dev

> shizhan@1.0.0 dev C:\Users\Administrator\Desktop\shizhan

> webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

 13% building modules 28/35 modules 7 active ...nistrator\Desktop\shizhan\src\App.vue{ parser: "babylon" } is deprecated; we now treat it as { parser: "babel" }.

 16% building modules 53/54 modules 1 active ...\src\pages\home\components\Header.vue(node:7784) UnhandledPromiseRejectionWarning: TypeError: loaderContext.getResolve is not a function

    at createEvaluator (C:\Users\Administrator\Desktop\shizhan\node_modules\stylus-loader\dist\utils.js:276:37)

    at Object.stylusLoader (C:\Users\Administrator\Desktop\shizhan\node_modules\stylus-loader\dist\index.js:107:60)

    at LOADER_EXECUTION (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:119:14)

    at runSyncOrAsync (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:120:4)

    at iterateNormalLoaders (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:232:2)

    at iterateNormalLoaders (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:221:10)

    at C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:236:3

    at Object.context.callback (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:111:13)

    at Object.module.exports (C:\Users\Administrator\Desktop\shizhan\node_modules\vue-loader\lib\selector.js:21:8)

    at LOADER_EXECUTION (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:119:14)

    at runSyncOrAsync (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:120:4)

    at iterateNormalLoaders (C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:232:2)

    at C:\Users\Administrator\Desktop\shizhan\node_modules\loader-runner\lib\LoaderRunner.js:205:4

    at C:\Users\Administrator\Desktop\shizhan\node_modules\enhanced-resolve\lib\CachedInputFileSystem.js:70:14

    at processTicksAndRejections (internal/process/task_queues.js:75:11)

(Use `node --trace-warnings ...` to show where the warning was created)

(node:7784) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)

(node:7784) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

​ 

<template>

  <div class="header">

    <div class="header-left">返回</div>

    <div class="header-input">内容</div>

    <div class="header-right">城市</div>

  </div>

</template>

<script>

export default {

  name: 'HomeHeader'

}

</script>

<style lang="stylus" scoped>

.header {

  display: flex;

  height: 2.6875rem;

  background:#00bcd4 {

    .header-left {

      width: 2rem;

      float: left;

    }

    .header-input {

      flex: 1;

    }

    .header-right {

      width: 7.75rem;

      float: right;

    }

  }

}

</style>