ValueError prevents from running experiment

If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10): mac
PsychoPy version (e.g. 1.84.x): 2
Standard Standalone? (y/n) If not then what?:
What are you trying to achieve?: Creating a Simons Test - trying to run the experiment, but value error message appears - ''ValueError: invalid literal for int() with base 16: ‘ta’

What did you try to make it work?: change participant name in data settings, changed back, ran experiment again, nothing working

What specifically went wrong when you tried that?: experiment does not run, simply grey screen appears then error message
Include pasted full error message if possible. “That didn’t work” is not enough information.