Err:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libiw30 amd64 30~pre9-13ubuntu1 Temporary failure resolving 'archive.ubuntu.com' code example

Example: Err:5 http://archive.ubuntu.com/ubuntu focal/main amd64 libgif7 amd64 5.1.9-1 Temporary failure resolving 'archive.ubuntu.com'

Check your internet connection, your VPN or any antivirus which is creating
the conflict