Try to install, but it fails

I get a lot of fails after " npm install genieacs ".
here some if them:
npm ERR! fetch failed https://registry.npmjs.org/async-each/-/async-each-1.0.3.tgz
npm ERR! fetch failed https://registry.npmjs.org/atob/-/atob-2.1.2.tgz

Am I doing something wrong ?

I had a hard time finding the best installation guide for the first time, but take a look at this!

Have a good day!