1. Run `npm rebuild node-sass` to download the binding for your current environment.
这可能是 node 升级导致的问题
解放方案:根目录增加 .npmrc 文件,内容:
sass_binary_site=https://npm.taobao.org/mirrors/node-sass/
registry=https://registry.npm.taobao.org
然后执行命令:`$ npm rebuild node-sass`