Well that's an error error

Makes it interesting doesn't it? Try this:
Open IE> Click
Tools (Gear) icon upper right>
Internet Options>
Advanced tab> In the settings list, tick the
Disable script debugging (Internet Explorer) and
Disable script debugging (Other) check boxes> Untick the
Display a notification about every script error check box>
Apply and
OK your way out
If the error goes away, untick the Disable script debugging (Internet Explorer) and Disable script debugging (Other) check boxes, and leave the Display a notification about every script error check box unticked
See if the error returns or stays away.
A Guy