Missing requirements.

[DKingAlpha]

Missing requirement browser_cookie3 to run the script.

Besides,
Multipule denpendencies need to be installed before pip3 install -r requirements.txt

Packages are listed below:

APT PKG            (Py3 PKG)
libxml2-dev        (lxml)               # Might also need libxslt1-dev
libssl-dev         (cryptography)       # Dep. of browser_cookie3

Fix:
sudo apt-get install libxml2-dev libxslt1-dev libssl-dev
pip3 install browser_cookie3

Please consider an INSTALLASION file.

[DKingAlpha]

And code is buggy.
Please move import getpass to the head of file and revise login function.