webdriver管理器更新引发未处理的错误

Question

我正在使用protractor和webdriver，当我试图在webdriver管理器上进行更新时，我得到了下面的错误。

>     webdriver-manager update events.js:160
>       throw er; // Unhandled 'error' event
>       ^
> 
> Error: tunneling socket could not be established, statusCode=407
>     at ClientRequest.onConnect (\\hermes\vhd_profiles\VDI_Home_VHD1\modisej\AppData\Roaming\npm\node_modules\protractor\node_modules\tunnel-agent\index.js:166:19)
>     at ClientRequest.g (events.js:292:16)
>     at emitThree (events.js:116:13)
>     at ClientRequest.emit (events.js:194:7)
>     at Socket.socketOnData (_http_client.js:394:11)
>     at emitOne (events.js:96:13)
>     at Socket.emit (events.js:188:7)
>     at readableAddChunk (_stream_readable.js:176:18)
>     at Socket.Readable.push (_stream_readable.js:134:10)
>     at TCP.onread (net.js:551:20)

当我使用webdriver-manager status检查当前可用的驱动程序列表时，我得到以下结果。

    $ webdriver-manager status
    I/status - selenium standalone is not present
    I/status - chromedriver is not present
    I/status - geckodriver is not present
    I/status - IEDriverServer is not present
    I/status - android-sdk is not present
    I/status - appium is not present

但在查找webdriver-manager版本时，请参阅以下内容：

webdriver-manager version
I/version - webdriver-manager 12.0.6

节点版本: 7.2.1 Protractor版本: 5.1.2 Webdriver版本: 12.0.6