Some participants have contacted me saying they are getting JavaScript error

URL of experiment: Pavlovia

Description of the problem: I am conducting a study for my final year dissertation. Data collection had been running smoothly with no errors coming up. However, recently around 7 people have contacted me saying they are getting a JavaScrpit error when trying to start the study. I have no idea why this has recently started happening. I suggested they try and refresh the study and open it again but the JavaScript error prevails.
I am comparing age in my study and this error seems to only come up with older participants so I am not sure if it would be an issue with their browser not being updated? This is just a guess as I am very new to coding.

Hey!

It could indeed be due to those participants using relatively old browsers. To get more detailed information from participants that report an error, see this guide: https://thomaspronk.com/pdf/Tech_Support_and_Bug_Report_Guidelines%20v1.3.pdf

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