Error self signed certificate in certificate chain

Hello everybody,
I run Ubuntu 18.04.6 LTS.
When I do npm install it fails : error self signed certificate in certificate chain

I had a similar problem a few weeks ago : [SOLVED] Error in installing fibers - #8 by dokithonon

I updated node to v 14.19.3 and it worked. But now it fails again.
Do you have any idea ?

Which Meteor version and NPM are you using?

Hello,
Npm version 6.14.12 and Meteor version 2.7.3
I think this has nothing to do with Meteor itself because this time it is related to cpu-features node packages. Any time I want to install a new node modules on this server I encounter those errors.
It may be a firewall issue.