1、报错如下：

 

2、此时你执行npm run dev  / npm run build 会报错如下

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! vue@1.0.0 dev: `webpack-dev-server –inline –progress –config build/webpack.dev.conf.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the vue@1.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! A complete log of this run can be found in:

 

3、解决方案

先执行:

npm cache clean –force

后:

npm install

 

4、参考：

https://blog.csdn.net/genius_yym/article/details/84645915

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