URL of experiment: private experiment Description of the problem: Hello everyone, when i try to pilot my experiment on Pavlovia, I get an TypeError: win is undefined error. I do not have a code component in which I specify that I want the window to be full screen, I’ve only checked the option for f…

It doesn’t necessarily have to do with fullscreen, but this error most likely indicates that there is a code component that, in Python, refers to the visual.Window object PsychoPy uses for local experiment runs. For example, if you define a visual stimulus inside a code component, or change the back…

Thanks for your reply! I will briefly explain my experiment because I think it will help to understand it better: In my experiment, participants go through a word list while background music plays. The music continues until all the words have been presented and then stops. After that, a text compon…

I would recommend that you create your sound object with a component and then control it in code.

Thanks for your reply. I tried (I didn’t fill in anything for the duration, by the way) and it messes up the whole experiment (text stimuli and fixation cross are presented at the same time and then there is nothing, only the sound and a blank screen.

What version of PsychoPy are you using? Does it work locally?

I use the PsychoPy 2024.2.4 version and yes it does work locally.

Thank you for your answer. I rebuilt the experiment step by step and realized that without the code components regarding the sound, the experiment works on Pavlovia. I need this sound, and if I insert a sound component into the trial routine, the whole experiment fails because text and sound compone…

[image] wakecarter: I would recommend that you create your sound object with a component and then control it in code. Have you tried this are are you still trying to create the sound object in code?

Pavlovia- TypeError: win is undefined

Online experiments

jonathan.kominsky February 20, 2025, 1:59pm 8

I belatedly realized that something like this is probably the underlying issue: TypeError: undefined is not an object (evaluating 'win._psychoJS') - #2 by jonathan.kominsky

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Pavlovia- TypeError: win is undefined

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