$ sudo apt-get update
$ sudo apt-get install libhtml-template-perl 

libhtml-template-perl is installed in your system.

Make ensure the libhtml-template-perl package were installed using the commands given below,

$ sudo dpkg-query -l | grep libhtml-template-perl *

You will get with libhtml-template-perl package name, version, architecture and description in a table

libhtml-template-perl package basic information: