Error in uploading participant's resuits for experiment

URL of experiment: TimeSpace_A [PsychoPy]

Description of the problem: The participant has already seen the experiment end page, but an error appeared at the end, with the content: “Unfortunately we encountered the following error:
when uploading participant’s resuits for experiment:Vega/ts_a
Try to run the experiment again. lf the error persists, contact theexperiment designer.”