How to install theHarvester on Ubuntu 18.04 LTS

theHarvester.sh

# Youtube: https://www.youtube.com/channel/UC8dSAxutoOJuoy7kExTd0AQ

# !/bin/sh

# use to git clon to download and clone the theHarvester from Github
git clone https://github.com/laramies/theHarvester 

# Now enter into the theHarvester Folder 
cd theHarvester

# Now install pip 
sudo apt install python3-pip

# Now run the command if not donot work then run second one
python3.7 -m pip install -r requirements/dev.txt

# Else:
python3.7 -m pip install -r requirements/base.txt

# NOw run theHarvester
python3.7 theHarvester.py -h 

# For Generating email list use this command
python3.7   theHarvester.py   -d   gmail.com   -l   500   -b   google

I am getting an error
python3 theHarvester.py -h
Traceback (most recent call last):
File "/home/akkugadre/theHarvester/theHarvester.py", line 5, in
from theHarvester.theHarvester import main
File "/home/akkugadre/theHarvester/theHarvester/theHarvester.py", line 4, in
from theHarvester import main
File "/home/akkugadre/theHarvester/theHarvester/main.py", line 13, in
import ujson
ModuleNotFoundError: No module named 'ujson'

but ujson is installed I am not sure what I am doing wrong can some one please help?

I was able to get around it by using
python3 -m pip config set global.break-system-packages true
which I should probably not do since it promises to break system packages, but wth, i am on a personal system, little infractions are ok among friends right?!