Issue with getting ReefPi Dev Environment setup Correctly

[JFReyes]

I did not get any error on make install at all.

BUT

I spent all night redoing all of the NPM packages and found that if I did the following everything worked and I now have a functioning site ;

Downgraded to postcss-loader v3 to work (not ideal, but does the job for now):
npm uninstall postcss-loader --save-dev
npm install postcss-loader@~3.0.0 --save-dev

I then ran the make without any errors

Excellent! Glad you could solve it and thanks for sharing the information.

Cheers,