ERROR in ./~/css-loader?{"sourceMap":false,"importLoaders":1}!./~/postcss-loader!./~/sass-loader!./src/scss/style.scss
Module build failed: Error: Cannot find module 'node-sass'
    at Function.Module._resolveFilename (module.js:455:15)
    at Function.Module._load (module.js:403:25)
    at Module.require (module.js:483:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (D:\Users\wb278387\ng2\ng2-admin\node_modules\sass-loader\index.js:4:12)
    at Module._compile (module.js:556:32)
    at Object.Module._extensions..js (module.js:565:10)
    at Module.load (module.js:473:32)
    at tryModuleLoad (module.js:432:12)
    at Function.Module._load (module.js:424:3)
    at Module.require (module.js:483:17)
    at require (internal/module.js:20:19)
    at loadLoader (D:\Users\wb278387\ng2\ng2-admin\node_modules\loader-runner\lib\loadLoader.js:13:17)
    at iteratePitchingLoaders (D:\Users\wb278387\ng2\ng2-admin\node_modules\loader-runner\lib\LoaderRunner.js:169:2)
    at iteratePitchingLoaders (D:\Users\wb278387\ng2\ng2-admin\node_modules\loader-runner\lib\LoaderRunner.js:165:10)
    at D:\Users\wb278387\ng2\ng2-admin\node_modules\loader-runner\lib\LoaderRunner.js:173:18
 @ ./src/scss/style.scss 4:14-203
 @ multi ./src/scss/style.scss ./~/primeng/resources/themes/omega/theme.css ./~/primeng/resources/primeng.min.css

This problem is caused by not installing python. After that, configure the python environment variables. NPM link again