Postman CA certificate not found [Ubuntu][Snap]

I’ve followed the instructions to setup the HTTPS proxy on Postman on Linux (Ubuntu). However, when I try to copy the certificate from the Postman’s configuration folder:

sudo cp ~/.config/Postman/proxy/postman-proxy-ca.crt /usr/share/ca-certificates/extra/postman-proxy-ca.crt

it fails with the following message:

cp: cannot stat '/home/<my_user>/.config/Postman/proxy/postman-proxy-ca.crt': No such file or directory

How can I setup the proxy properly?

Details:

  • Ubuntu 21.10
  • Postman Version 8.12.5 linux 5.13.0-22-generic / x64
  • Snap version