$ sudo apt-get update
$ sudo apt-get install libcupscgi1 

libcupscgi1 is installed in your system.

Make ensure the libcupscgi1 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libcupscgi1 *

You will get with libcupscgi1 package name, version, architecture and description in a table

libcupscgi1 package basic information: