Error in Building LibreOffice

[Anubhav Gupta 4-Year B.Tech. Computer Science and Engineering]

Hi, I am Anubhav Gupta, and recently I was building libreoffice and while
following the steps on
https://wiki.documentfoundation.org/Development/BuildingOnLinux  I
encountered an error
on


make


Error:
 *** Something depends on package nss which does not exist..  Stop.



I tried a lot to find a way out but couldn't, can someone please help.
I was building it in Ubuntu 18.04 LTS x86_64 Linux
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