If this template helps then use it. If not then just delete and start from scratch.
PsychoPy version (it shows 2020.2.10, but I adapted it to 21.1.4, since my program is programed at a 21.1.4 psychopy on another computer):
What specifically went wrong?:
everytime when I tried to start the program, it showed key error: fonts. But I have never confronted this problem in the original computer.
Thanks for your help!