I tried to upload my experiment to a server by exporting it as HTML, but it’s not working. I get two error messages after I enter the ID number. Also I’m using the latest version of Psychopy and Windows 11. Unfortunately we encountered the following error: ReferenceError: os is not defined Try …

I suspect you are trying to access local files, which won’t work online. Here are a couple of relevant links. [image] ReferenceError: os is not defined Online experiments URL of experiment: https://run.pavlovia.org/jonas.tvedt/gazeproject/?__pilotToken=c20ad4…

Thank you for advice, but your link doesn’t work, could you send it to me again please

Click on the name of the thread, not the URL of the experiment

Thank you for your help, but I have another problem: I tried uploading it differently using Pavlovia, created an account, and checked my code because the auto-JavaScript hadn’t translated it correctly, so I had to edit it. And now, I have the same problem: when I try to upload it online using the …

[image] Wakefield's Daily Tips Blog Developer Tools If you encounter an error in an online study, open the Developer tools console using Ctl-Shift-I in Windows/Chrome, Cmd-Opt-J or Cmd-Opt-I in Mac/Chrome, F12 in IE/Edge, Ctrl-Shift-J in Windows/Safari or Ctrl-…

i have this error : Uncaught SyntaxError: Unexpected token ‘*’

Sounds like you’re trying to import a Python library.

ReferenceError: os/frameDur is not defined when I upload my experiment

Online experiments

wakecarter April 8, 2026, 12:12pm 6

What code was it that didn’t translate correctly and what did you change it to?

Topic		Replies	Views
Translation Problem: OS is not defined Online experiments	5	554	March 21, 2023
Error Unfortunately we encountered the following error: ReferenceError: os is not defined Try to run the experiment again. If the error persists, contact the experiment designer Online experiments	4	133	January 17, 2025
Uploading online error Online experiments	57	2128	April 19, 2021
ReferenceError: Can't find variable: os When trying to run experiment on pavlovia Online experiments pavlovia	2	744	March 25, 2022
Stuck at initialising the experiment Online experiments pavlovia	12	1262	May 26, 2021

ReferenceError: os/frameDur is not defined when I upload my experiment

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