`sass-loader` requires `node-sass` >=4

I was getting an error

Module build failed: Error: `sass-loader` requires `node-sass` >=4. Please install a compatible version.


The solution which works is:

• Remove the node-sass from global npm-cache (For Windows users %userprofile%\AppData\Roaming\npm-cache)
• Remove node-sass from your project's node_modules dir
• Do npm install to reinstall node-sass

Copied from https://github.com/webpack-contrib/sass-loader/issues/563