2019-07-09 解决 npm run dev 出现Failed at the XXX dev script. npm ERR! This is probably not a problem...

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查看了下webpack-dev-server的版本，由于webpack 与 webpack-dev-server 版本匹配不一致，于是对webpack-dev-server降级安装再重新npm run dev

npm i -D webpack-dev-server@2.9.7
npm run dev
ok！

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附：通用方法：
依次执行以下

rm -rf node_modules
rm package-lock.json
npm cache clear --force
npm install