I installed a new module and it appears as if one of its dependencies was not already installed. The module is called Xlib.display. Here is the error message I received:
I honestly cant explain why this works... but here is the command that got it working for me.
sudo apt-get install python3-xlib
Should not work because xlib apparently does not work with python 3.x, but everything installed alright, so I'm not complaining!