I can run an experiment locally on psychopy and psychopy studio, but received the error message below when syncing to pavlovia to run it online. I have been using the builder to set up my images, text boxes, and buttons components but apart from this, I do not set the colours of any of these compon…

So the solution from below actually worked - I just had to remove the $ and (), and only leaving the values e.g., 1,1,1. I initially saw this post but because I have so many components with colour parameters (246) I didn’t think it was possible to manually change the values. I just found out that Cl…

There’s a bug with the colour picker. You need to add a $ to the start of the colour list in the component. Does that help?

Thank you for your reply! I have skimmed through some of my components with the colour parameters using the ‘Find in experiment’ feature and couldn’t see any colour list that is missing the $ at the start (I attached a screenshot for example). I haven’t properly gone through all the components one …

Use Developer Tools to identify where the error is coming from. [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 Ma…

The developer tools shows 3 errors as in the 1st picture below. For the first line (onunhandledrejection, line 890) the code is in the 2nd picture. All the codes for the 2nd error (append, doAppend etc.) also don’t point to a specific variable/components that I have created. [Screenshot 2026-06-23…

Unfortunately this only really works when an error can be identified in your experiment’s JS file, rather than one of the PsychoJS files. Does the error happen straight away? If not, then can you work out what PsychoPy is trying to do at the point it crashes? That might narrow down which component t…

Error: the color components should all belong to [-1, 1]

Online experiments

wakecarter June 22, 2026, 4:42pm 4

Use Developer Tools to identify where the error is coming from.

Maybe it’s a variable colour

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Error: the color components should all belong to [-1, 1]

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