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Undefined error message when running study online 3.0

URL of experiment:

Description of the problem:
This is seen before, but i need some help, because I have xlxs files as data in the psychopy builder script.

When i try to run the pilot on pavlovia, this comes up.
"We could not find a record for experiment designer: undefined
Please check the name and try again. If the error persists, contact Pavlovia’s administrator. "

Best regards :smiley: