缺少依赖：!!vue-style-loader!css-loader?{"sourceMap":true}!../../../node_modules/vue-loader/lib/style-compiler/index?{"vue":true,"id":"data-v-7181859d","scoped":true,"hasInlineConfig":false}!sass-load

(1) being given a:

 Reference address; https: //blog.csdn.net/genius_yym/article/details/82222424

 

npm install node-sass --save-dev //安装node-sass
npm install sass-loader --save-dev //安装sass-loader
npm install style-loader --save-dev //安装style-loader