vuepress 打包出现问题 dist文件生成为空 。报错了本地运行没问题

Question

问题描述

打包问题

问题出现的平台版本及自己尝试过哪些方法

相关代码

// 请把代码文本粘贴到下方（请勿用图片代替代码）
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! docs@1.0.0 docs:build: vuepress build docs
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the docs@1.0.0 docs:build 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:
npm ERR! C:UserszhangAppDataRoamingnpm-cache_logs2019-07-24T11_13_33_651Z-debug.log

附上一段
Error: Cannot find module 'webpack'

at Function.Module._resolveFilename (module.js:536:15)
at Function.Module._load (module.js:466:25)
at Module.require (module.js:579:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (C:\Users\zhang\Desktop\vuepress\bolg\node_modules\stylus-loader\index.js:183:27)
at Module._compile (module.js:635:30)
at Object.Module._extensions..js (module.js:646:10)
at Module.load (module.js:554:32)
at tryModuleLoad (module.js:497:12)
at Function.Module._load (module.js:489:3)
at Module.require (module.js:579:17)
at require (internal/module.js:11:18)
at loadLoader (C:\Users\zhang\AppData\Roaming\npm\node_modules\vuepress\node_modules\_loader-runner@2.4.0@loader-runner\lib\loadLoader.js:18:17)
at iteratePitchingLoaders (C:\Users\zhang\AppData\Roaming\npm\node_modules\vuepress\node_modules\_loader-runner@2.4.0@loader-runner\lib\LoaderRunner.js:169:2)
at iteratePitchingLoaders (C:\Users\zhang\AppData\Roaming\npm\node_modules\vuepress\node_modules\_loader-runner@2.4.0@loader-runner\lib\LoaderRunner.js:165:10)

你期待的结果是什么？实际看到的错误信息又是什么？