URL of experiment: https://run.pavlovia.org/Doritse/cpt
Description of the problem: I try piloting my experiment and keep getting a message that it is initializing the experiment but nothing happens.
According to the Browser console you have a syntax error in this line.
rStarP.setOpacity(((shape == 'star') and (color == 'red')));
Is that code from your component?
To run experiments online you need to write code like this in code components so they can be translated to JavaScript.
Please take a look at my crib sheet for more notes on running experiments online.