Blank page while piloting the experiment

I uploaded my experiment to Pavlovia. On clicking on pilot, a new blank webpage is opened and the experiment doesn’t run. I used F12 and chrome shows the below message

Could someone please help me with the problem?
Thank you for your help!

Could you share your experiment with me so I can take a look? (tpronk)
See Searching for experiments on Pavlovia — PsychoPy v2021.2

Thank you for your reply. I have shared the experiment with you.

I took a peek. In experiment settings, online tab, try picking the empty option for “Use PsychoPy Version”

Thank you, it’s working now!
Could you please tell me why I should leave the version empty? I have never faced this problem with the older version.

Originally you had 2021.1 there. While that version is in the dropdown, it doesn’t actually exist.