报错的原因
不能解析sass-loader
Failed to compile.
./src/components/Map.vue
Module not found: Error: Can't resolve 'sass-loader' in 'E:\Element-UI-master\src\components'
@ ./src/components/Map.vue 4:2-346
@ ./src/router/index.js
@ ./src/main.js
@ multi ./node_modules/_webpack-dev-server@2.11.5@webpack-dev-server/client?http://localhost:8081 webpack/hot/dev-server ./src/main.js
解决办法：
-
cnpm install sass-loader -D
-
cnpm install node-sass -D