Experiment in Pavlovia does not load, problem with images

I have build an experiment that shows images and plays the sound. I works well on the laptop. When I syncronize it with Pavlovia, it does load all the resources, but when you press OK to start, it shows the following message:

I have tried checking all the resources, and they seem to be loaded well.

There is no output path in the Online settings, as seems to be the case sometimes.

The image files are given using paths should work online, no reference to my laptop.

And as I do not even understand the error message, I am a bit lost of how to proceed…

Any ideas?

The link to the experiment iteself: Pavlovia

Have you embedded images in your spreadsheet?