"Unknown resource" when I try piloting my experiment

URL of experiment: https://pavlovia.org/run/eunjungcha/rsvp_face

Description of the problem:
When I try piloting the experiment, it says all resources etc are downloaded but as the experiment starts, a window saying “unknown resource” appears.

I have checked my resources file and everything seems to have been uploaded correctly. Am I missing something? Do I need to do something additional in order to run the experiment online?

If you have a resource defined in code, you need to add it in the online tab of experiment settings.

Hi, thank you so much for a prompt reply. All my resource files are images. I 'm also not sure I completely understand what you mean by “online tab of experiment settings”. Could you please elaborate? :slight_smile:

Apparently, we can find solutions to most of our errors in this document.

I had similar problems as you do. I followed the instructions: Use experiment settings > online > +/- keys to add the list of resources your experiment will need (2020.2.6 onwards).

You can find the experiment settings on the top panel of the builder. Once you added your images, synchronize your experiment again. Then it should work.

However, the pictures never get fully synchronized for my study. So I had to manually add the resources that I need to the JavaScript codes. The resources should be added to this section of your JavaScript.

expName: expName,
expInfo: expInfo,
resources: [


Hope this helps!!