Can't run the experiment online

URL of experiment: https://run.pavlovia.org/gshejaeya/hvpt_controlb

Description of the problem: I can’t run the experiment online. It works perfectly locally, but online I get stuck with the “initializing the experiment…” screen. No error messages.

Do you have any imports?

Please take a look at my crib sheet (pinned post)

No I don’t and I used one simple code that I already tried online in another test experiment and it worked.