How to get rid of "SELF_SIGNED_CERT_IN_CHAIN" error when installing npm package?

Question

JavaScript

I'm trying to install a package: npm i chai(not in the project folder, but in the directory above).
Gives an error npm ERR! code SELF_SIGNED_CERT_IN_CHAIN
At the same time, I already installed several other packages there normally, but this one does not want ... I
found tips on the net to try npm --ca=null --strict-ssl=false iinstall ...
Tried:

npm --ca=null --strict-ssl=false i chai
npm set strict-ssl false

The result is still not working. Another error falls out, or rather, a sheet falls out for 2 and a half thousand lines marked "ERR" ...
How to overcome this?

Answer 1

In general, if anyone else encounters something like this, they talked to our network attack protection service, they faked something there and everything worked.

Answer 2

Trite of course, but have you tried updating NPM or reinstalling the node? (the error is related to the certificates that come with it)