[ERROR] Error decoding passwords: libnss not found (libnss3.so)

[JurgenG]

Under Ubuntu 18.04 (64 bits), when running Python3, I get the following error:
$ python3 dumpzilla.py ~/.mozilla/firefox/xxxxx.default/ > ~/Desktop/ff.report
[ERROR] Error decoding passwords: libnss not found (libnss3.so)

This is where I find libnss3.so:
/usr/lib/x86_64-linux-gnu/libnss3.so

[JurgenG]

on another machine, I found it at /usr/lib/libnss3.so

After creating a symlink to the file in the current path of dumpzilla, everything just worked as should.