在配置webpack时，npm run build 提示要安装webpack-cli ，可是按照webpackcli报错，是怎么回事

D:\zhouWork\zhou-vue-learn>npm run build

> zhou-vue-learn@1.0.0 build D:\zhouWork\zhou-vue-learn

> webpack --config webpack.config.js

One CLI for webpack must be installed. These are recommended choices, delivered as separate packages:

 - webpack-cli (https://github.com/webpack/webpack-cli)

   The original webpack full-featured CLI.

We will use "npm" to install the CLI via "npm install -D".

Do you want to install 'webpack-cli' (yes/no): yes

Installing 'webpack-cli' (running 'npm install -D webpack-cli')...

npm ERR! Unexpected end of JSON input while parsing near '...gistry.npmjs.org/v8-c'

npm ERR! A complete log of this run can be found in:

npm ERR!     C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2019-01-25T14_41_49_948Z-debug.log

undefined

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! zhou-vue-learn@1.0.0 build: `webpack --config webpack.config.js`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the zhou-vue-learn@1.0.0 build script.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:

npm ERR!     C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2019-01-25T14_41_50_289Z-debug.log

D:\zhouWork\zhou-vue-learn>npm install -g webpack-cli

npm ERR! Unexpected end of JSON input while

npm ERR! A complete log of this run can be

npm ERR!     C:\Users\Administrator\AppData