I am having problems while trying to watch YouTube with the Firefox browser. I keep getting as yellow bar at the top of the page when trying to do anything on YouTube. A screenshot of the error is attached. I've asked Mozilla about this before, and I am also trying to get a fix from Dashlane. It concerns the message "a script in the extension Dashlane is causing Firefox to slow down" then it shows Learn more. When I open that if the warning stays long enough to click on it. It recommends changing dom.max_script_run_time. It shows it is set at 10, and will not allow any change as suggested. Then it suggests adding JavaScript toggle on and off. That does not help either. I would thank anybody between Mozilla and Dashlane that can provide a reason for this continued error message and how to fix it. This has been going on for months.