Getting error npm ERR! ng4-cli-demo@0.0.0 build: `npm run build:client`

[gnanavelshenll]

I'm getting this error while running your code.

` npm run build

ng4-cli-demo@0.0.0 build C:\Users\Gnanavel\Desktop\angular-ssr-master
npm run build:client

npm ERR! file C:\WINDOWS\system32\cmd.exe;
npm ERR! path C:\WINDOWS\system32\cmd.exe;
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn C:\WINDOWS\system32\cmd.exe;
npm ERR! ng4-cli-demo@0.0.0 build: npm run build:client
npm ERR! spawn C:\WINDOWS\system32\cmd.exe; ENOENT
npm ERR!
npm ERR! Failed at the ng4-cli-demo@0.0.0 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\Gnanavel\AppData\Roaming\npm-cache_logs\2017-12-29T07_30_50_568Z-debug.log
`