Pop-up message of "This webpage is using significant energy. closing it may improve the responsiveness of your mac"

URL of experiment:

Description of the problem: Error message of “this webpage is using significant energy. closing it may improve the responsiveness of your mac”

Hi all, today one of my participants receives an error/pop-up message saying, “this webpage is using significant energy. closing it may improve the responsiveness of your mac”.

I wonder what this error (or warning message) can affect to an oline study. So far, everything is ok, except that this pop-up message gets participants out from a full screen mode and that slightly distracts my participant’s attention to my online study.

I wonder what is the best way to avoid from this pop-up message.