Error code after deleting empty columns

URL of experiment: Pavlovia

Description of the problem:
Encountering this error code when trying to pilot the experiment:
Unfortunately we encountered the following error:

  • TypeError: Cannot assign to read only property ‘undefined’ of object ‘#’

Try to run the experiment again. If the error persists, contact the experiment designer.

I have looked it up on the forum and deleted all empty columns, deleted the experiment, and re-synced it onto Pavlovia, and I still get this error code.

Where is your cursor?

Have you found a solution to this? I’m having the same problem.