"make run" not working

I’m trying to install Grafana for development on my Windows 10 computer, following this guide: https://github.com/grafana/grafana/blob/master/contribute/developer-guide.md

However, when I enter “make run”, it throws

File not found - *.sh
Den angivne sti blev ikke fundet. (error is in Danish, in English it would say something like “path not found”)
make: *** [scripts/go/bin/bra] Fejl 1 (in English: “Error 1”)