vue 项目启动报错

1.项目启动报类似下方错误

Error: Cannot find module 'webpack-cli/bin/config-yargs'
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2.原因于解决办法

Webpack与webpack-dev-server版本不兼容

//卸载版本
cnpm uninstall webpack -g
cnpm uninstall -g webpack-dev-server

//安装指定版本
cnpm install webpack@3.8.0 --save-dev
cnpm install webpack-dev-server@2.9.7 --save-dev