Data not saved when conducting online experiment

URL of experiment: Pavlovia

Description of the problem:
When conducting the experiment online the data usually saves. However, in one of our participants the following message appeared once the experiment was completed:

Since we want to avoid problems with saving the data in future experiments, and our participant was using Safari at the time, we were wondering whether Pavlovia might have difficulties in saving the data from Safari browsers? In that case, we would need to alert our participants beforehand.

I’m just wondering whether there’s an issue with having _post in the directory name, since that part seems to be missing from the error message.

$_POST has a special meaning in PHP (variables sent via a form).