Experiment is not shown in the screen

When I install PsychoPy, I do not encounter any problems with the builder, but when I try to install and delete a few programs on both my own computer and other computers, runner is having problems. It gives an error message and opens and closes the experiment page immediately. So I can’t see the experiment. I added the error message it gave. Computers also use phyton 3.6.0. In this case, I can design the experiment, but what kind of thing I cannot test myself. It did not give any warning on Alerts.
There is a warning in the running part as;
Traceback (most recent call last):
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\runner.py”, line 277, in onClose
self.onQuit()
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\runner.py”, line 285, in onQuit
self.panel.stopTask()
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\runner.py”, line 545, in stopTask
self.stopFile(event)
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\scriptProcess.py”, line 109, in stopFile
self.onProcessEnded()
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\runner.py”, line 514, in onProcessEnded
ScriptProcess.onProcessEnded(self)
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\scriptProcess.py”, line 140, in onProcessEnded
self.app.runner.stdOut.write(buff)
AttributeError: ‘NoneType’ object has no attribute ‘stdOut’

Where did I go wrong? I will be grateful if you could help me.

1 Like

This was an issue in 2020.2.2 to 2020.2.4, if you update to 2020.2.5 it should be resolved

In actually my PsychoPy’s version is 2020.2.5… Can this problem is related with mismatch of computer and PsychoPy?