vueJs引入elementUI組件，運(yùn)行時(shí)出現(xiàn)ERROR

vueJs引入elementUI組件，運(yùn)行時(shí)出現(xiàn)ERROR:

 ERROR  Failed to compile with 1 errors                                


This dependency was not found:

* element-ui/lib/theme-default/index.css in ./src/main.js

To install it, you can run: npm install --save element-ui/lib/theme-default/inde
x.css
終止批處理操作嗎(Y/N)? n

根據(jù)提示安裝npm install --save element-ui/lib/theme-default/index.css 出現(xiàn)錯(cuò)誤：

H:\webpackLX\Vue-Demo> npm install --save element-ui/lib/theme-default/index.css

npm ERR! code ENOLOCAL
npm ERR! Could not install from "element-ui\lib\theme-default\index.css" as it d
oes not contain a package.json file.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2018-03-06T0
6_11_20_844Z-debug.log

這是什么原因？ 如何解決？