$ sudo apt-get update
$ sudo apt-get install libdebconf-kde1 

libdebconf-kde1 is installed in your system.

Make ensure the libdebconf-kde1 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libdebconf-kde1 *

You will get with libdebconf-kde1 package name, version, architecture and description in a table

libdebconf-kde1 package basic information: