$ sudo apt-get update
$ sudo apt-get install iptables-nftables-compat 

iptables-nftables-compat is installed in your system.

Make ensure the iptables-nftables-compat package were installed using the commands given below,

$ sudo dpkg-query -l | grep iptables-nftables-compat *

You will get with iptables-nftables-compat package name, version, architecture and description in a table

iptables-nftables-compat package basic information: