Please help a rookie out!
PsychoPy version : 2021.2.3
What are you trying to achieve?: building a Posner Study according to the Youtube Tutorial Tutorial 1: How to make a Posner in PsychoPy (2020) - YouTube
What did you try to make it work?: follow the instructions
What specifically went wrong when you tried that?: ModuleNotFoundError: No module named ‘pyexpat’
Can I download that module somewhere?