Cannot load npm errors with uglify js

[erinjerri]

Got this error on install. Having issues with this and yarn.
`npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install" "--save" "vr-viz"
npm ERR! node v6.11.1
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE

npm ERR! uglifyjs-webpack-plugin@0.4.6 postinstall: node lib/post_install.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the uglifyjs-webpack-plugin@0.4.6 postinstall script 'node lib/post_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 uglifyjs-webpack-plugin package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node lib/post_install.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs uglifyjs-webpack-plugin
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls uglifyjs-webpack-plugin
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! E:\erinjerri-GH-repos\aframed3viz\npm-debug.log
`

[mustafasaifee42]

Try using the boilerplate: https://github.com/mustafasaifee42/vr-viz-boilerplate
The documentation there specifies the setup process.