webpack-dev-server报错

运行npm run dev报错，----

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

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! vue_test@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_test@1.0.0 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\2019-03-26T03_47_45_865Z-debug.log

原因：这是新版webpack存在的BUG，卸载现有的新版本webpack，装老版本就好。

（1）npm uninstall webpack-dev-server

（2）npm install webpack-dev-server@2.9.1

（3）npm run dev