YouTube tutorial supporting materia not found

I am trying to follow a tutorial one the PsychoPy YouTube channel (Tutorial 1: How to make a Posner in PsychoPy (2020) - YouTube)

However, the supporting material supposedly found under https://psychopy.org/posner.zip is unavailable.

I’ll mention this to the team. In the meantime, this link to the Posner demo files might help.