Win 10, PsychoPy Builder 2025.1.1, Standalone. I am trying to push an experiment made in Builder to Pavlovia for the first time. I read different threads, instructions but I guess I am doing sth wrong. I did not plan to run the experiment online (PI asked me to transform it into a Pavlovia exp, “qu…

Hello @danna [image] danna: For further info see 4210: Probable syntax error detected in your JavaScript code — PsychoPy v2025.2.4 Besides the VariableComponent which does not work online, try to fix above mentioned error. Follow the advice given by @wakecarter . Best wishes Jens

Hi, Thanks. Do you have any idea what may cause the error message when I start PsychoPy? Now it shows up for the original version as well (different folder), that was never fetched…

[image] danna: gitlab.exceptions.GitlabAuthenticationError: 401: invalid_token Since you are using 2025.1.1 you will frequently need to log into Pavlovia in PsychoPy. Try logging out and logging in again from Builder.

[image] danna: Do I have to define them simply by “let Var ===” ? No. [image] Wakefield's Daily Tips Blog ReferenceError: varName is not defined This is one of the most common errors in online experiments [image] It is also one of the easiest to solv…

Thanks. Sorry for this question, I just want to make sure that I understand what you wrote correctly. Am I required to do the same, if I created variable components to get them saved in the datafile. so let’s say I have blocknumber, chunknumber etc. initialized and set in a custom code component and…

I don’t use variable components, but if you want to save the value of blocknumber to your datafile then the Python code is: thisExp.addData('BlockNum',blocknumber) This will auto-translate to JS correctly.

Hi, Thank you! I will get back sometime later to tell whether the experiment runs with all the suggested changes. In any case, I learnt a lot from the replies, so thanks again.

For syncing to Pavlovia I would try syncing a very simple experiment to test, just in case yours in failing due to JS errors or too many resources.

Hi @wakecarter , So removed the var components, then I tried to resynch. Nothing worked so in the end I deleted the project from Pavlovia, also everything created including the hidden git folder as suggested in another thread, after repeated failures, to connect to hte actual and not a deleted projec…

Have you tried syncing a very simple experiment to test, just in case yours in failing due to too many resources.

Problems with Pavlovia synchronization

Online experiments

wakecarter February 1, 2026, 5:34pm 25

If your files are in Gitlab then this tip should help.

However, for some reason this was failing for me today, so please post here if you have code in Gitlab which isn’t showing up when running in an incognito tab.

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Problems with Pavlovia synchronization

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