I am trying to use a demo from pavlovia (demos / mental_rotation · GitLab), but it does not work when I try to run it. An error notification appears after the instructions and it does not show any of the stimuli. I am a new user and do not know how to use psychopy or Pavlovia, so I am unsure if I need to edit the demo for it to work, or how to edit the demo. Any help or instructions on how to fix this would be much appreciated.
Thanks
I would recommend starting by forking it.
Have you looked at these instructions?
https://psychopy.org/online/sharingExperiments.html