$ sudo apt-get update
$ sudo apt-get install freewnn-kserver 

freewnn-kserver is installed in your system.

Make ensure the freewnn-kserver package were installed using the commands given below,

$ sudo dpkg-query -l | grep freewnn-kserver *

You will get with freewnn-kserver package name, version, architecture and description in a table

freewnn-kserver package basic information: