Problem in creating a project repository on Pavlovia

I am new to the system and am trying to create a project repository on Pavlovia. I get this following note. Would you please help me?

Traceback (most recent call last):
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\builder\”, line 1247, in onPavloviaRun
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\pavlovia_ui\”, line 497, in syncProject
syncFrame =
AttributeError: ‘NoneType’ object has no attribute ‘stdOut’