Invalid protocol: null when npm install

[MayThuKhineSoe]

I'm opening this issue because:

• I can't install npm because return error "Invalid protocol: null ".

What's going wrong?

How can I set the right proxy of the npm?Can you teach me about npm proxy setting?

I attached file of npm-debug.log
npm-debug.txt
I post the error when I install npm.I searched about this error.But,I am not clearly understand about proxy of npm. >>Sorry for my weak English.
Here is my error !

D:\test\bot>npm install --save botkit
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\b
in\\npm-cli.js" "install" "--save" "botkit"
npm ERR! node v6.3.0
npm ERR! npm  v3.10.3

npm ERR! Invalid protocol: null
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR!     <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR!     D:\ブライソン\bot\npm-debug.log

D:\test\bot>

[MayThuKhineSoe]

config.txt
Here is my npm config file.

[npm-robot]

We're closing this support issue as it has gone three days without activity. The npm CLI team itself does not provide support via this issue tracker, but we are happy when users help each other here. In our experience once a support issue goes dormant it's unlikely to get further activity. If you're still having problems, you may be better served by joining package.community and asking your question there.

For more information about our new issue aging policies and why we've instituted them please see our blog post.