$ sudo apt-get update
$ sudo apt-get install libkpathsea6 

libkpathsea6 is installed in your system.

Make ensure the libkpathsea6 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libkpathsea6 *

You will get with libkpathsea6 package name, version, architecture and description in a table

libkpathsea6 package basic information: