tool is not working

[br0k3n-1337]

Error:
Traceback (most recent call last):
File "arl.py", line 4, in
import validators
ImportError: No module named validators

[defparam]

or in general install packages called out in the requirements.txt file by doing:

pip install -r requirements.txt

[v3daxt]

I faced the same issue, Got is solved with following two commands.

sudo -H pip2 install --upgrade pip
pip install validators
python3 arl.py <target>