报错内容：
These dependencies were not found:
* element-ui/lib/empty in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/sbgl/FpkcInfo.vue?vue&type=script&lang=js&
* element-ui/lib/theme-chalk/empty.css in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/sbgl/FpkcInfo.vue?vue&type=script&lang=js&
To install them, you can run: npm install --save element-ui/lib/empty element-ui/lib/theme-chalk/empty.css
These dependencies were not found:
* element-ui/lib/empty in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/sbgl/FpkcInfo.vue?vue&type=script&lang=js&
* element-ui/lib/theme-chalk/empty.css in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/sbgl/FpkcInfo.vue?vue&type=script&lang=js&
To install them, you can run: npm install --save element-ui/lib/empty element-ui/lib/theme-chalk/empty.css
报错图片：
解决办法：
1.删除已下载的node_moudules文件夹
2.清除下载缓存：npm cache clean --force
3.重新下载:npm install
4.npm install element-ui -s