install failed cause lwip2

[sirius1024]

I run npm i --save image-to-ascii and got an error:

node scripts/install.js

Installing lwip. If this fails, just install GraphicsMagick (http://www.graphicsmagick.org/).
events.js:160
throw er; // Unhandled 'error' event
^

Error: spawn npm ENOENT
at exports._errnoException (util.js:1036:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
at onErrorNT (internal/child_process.js:359:16)
at _combinedTickCallback (internal/process/next_tick.js:74:11)
at process._tickCallback (internal/process/next_tick.js:98:9)
at Module.runMain (module.js:592:11)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:509:3
npm ERR! Windows_NT 10.0.14393
npm ERR! argv "D:\Program Files\nodejs\node.exe" "D:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "i" "--save" "image-to-ascii"
npm ERR! node v6.6.0
npm ERR! npm v3.10.3
npm ERR! code ELIFECYCLE

npm ERR! lwip2@1.0.3 install: node scripts/install.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the lwip2@1.0.3 install script 'node scripts/install.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the lwip2 package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node scripts/install.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs lwip2
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls lwip2
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! D:\Code\npm-debug.log

and then run command npm i --save lwip2 got the same error message even through the proxy. some thing wrong with my setting?

[sirius1024]

Sorry, my fault! 😅