Vue搭建环境时npm run dev，npm ERR! code ELIFECYCLE

报错如下

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] dev: `webpack-dev-server --inline --progress --config build/webpack.dev.conf.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] dev 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:\Users\admin\AppData\Roaming\npm-cache\_logs\2018-11-09T07_28_28_466Z-debug.log

解决：卸载已安装的新版本webpack，装老版本就好。如果没有安装webpack，跳过第一条命令安装一下就好了。

（1）依次输入以下命令

npm uninstall webpack-dev-server

（2）安装2.9.1的webpack

npm install [email protected]

（3）运行项目

npm run dev