Suggestion

[tbntdima]

I would suggest to add .nvmrc.
npm i doesn't work properly for me with node v12

[KornelijusGlinskas]

Yeah, I've encountered the same issue. However, with NVM I installed and used the earlier version of node (10.9.0) for this tutorial and it worked just fine. :)

[Aj-vrod]

The current version is 15+ and while running nvm alias default node I got issues, once I changed it to 10.9.0 version it worked just fine.