Angular2 applicatoin node-sass install error - node.js

Question

My application was running fine but all of sudden showing the following error when i try npm i. my node version is: v6.10.3 and npm version: 3.10.10
npm WARN prefer global node-gyp#3.6.2 should be installed with -g
> node-sass#4.7.1 install C:\Projects\Latest_Nov20\FrontEnd\OdyssEY-UI-Core\node_modules\node-sass
> node scripts/install.js
gyp info it worked if it ends with ok
gyp verb cli [ 'C:\\Program Files\\nodejs\\node.exe',
gyp verb cli 'C:\\Users\\2024522\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\node-gyp\\bin\\node-gyp.js',
gyp verb cli 'rebuild',
gyp verb cli '--verbose',
gyp verb cli '--libsass_ext=',
gyp verb cli '--libsass_cflags=',
gyp verb cli '--libsass_ldflags=',
gyp verb cli '--libsass_library=' ]
gyp info using node-gyp#3.6.2
gyp info using node#6.10.3 | win32 | x64
gyp verb command rebuild []
gyp verb command clean []
gyp verb clean removing "build" directory
gyp verb command configure []
gyp verb check python checking for Python executable "python2" in the PATH
gyp verb `which` failed Error: not found: python2
gyp verb `which` failed at getNotFoundError (C:\Users\2024522\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed at F (C:\Users\2024522\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed at E (C:\Users\2024522\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed at C:\Users\2024522\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:89:16
gyp verb `which` failed at C:\Users\2024522\AppData\Roaming\npm\node_modules\node-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed at C:\Users\2024522\AppData\Roaming\npm\node_modules\node-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed at FSReqWrap.oncomplete (fs.js:123:15)
gyp verb `which` failed python2 { Error: not found: python2
Downloading binary from https://github.com/sass/node-sass/releases/download/v4.7.1/win32-x64-48_binding.node
Cannot download "https://github.com/sass/node-sass/releases/download/v4.7.1/win32-x64-48_binding.node":
tunneling socket could not be established, cause=getaddrinfo ENOTFOUND empweb2.ey.net empweb2.ey.net:80
Hint: If github.com is not accessible in your location
try setting a proxy via HTTP_PROXY, e.g.
export HTTP_PROXY=http://example.com:1234
or configure npm proxy via
npm config set proxy http://example.com:8080
> node-sass#4.7.1 postinstall C:\Projects\Latest_Nov20\FrontEnd\OdyssEY-UI-Core\node_modules\node-sass
> node scripts/build.js
I was trying installing nvm and uninstalled nvm. only after this, i am getting this error.
Can anyone help me what am i doing wrong here?
Thanks

Answer 1

I have faced and fixed this issue relates node-sass and python error.Try installing latest angular cli command with the steps below
Set the system variable path as well:
C:\Users\windowsusername\AppData\Roaming\npm
C:\Users\windowsusername\AppData\Roaming\npm\node_modules\#angular\cli\bin;
C:\Program Files\nodejs;
Then start using angular cli command prompt using:
angular client project folder path>npm install -g #angular/cli#latest
angular client project folder path>npm install -g node-gyp