why webpack can't find loader

[suitcasemedia]

Hello I have got as far as the loading the CSS into webpack on page 18 on the PDF.
I keep getting the following errors when running npm start (see screen shot)
I saw someone else had the same problem on Stackoverflow:
https://stackoverflow.com/questions/39130526/why-webpack-cant-find-loader

[suitcasemedia]

p.s.
My code is here
https://github.com/suitcasemedia/yelp-clone

[haits293]

The same issue as me

[GilbertoHdz]

The same issue as me

[larsmaxwell]

same issue here

[num3robis]

UP pliz