Ignition version 8.1.15 unknown symbol

i did upgrade on test environment from version 8.1.13 to 8.1.5 . i noticed unknown symbol in script transformation . added to that when pass parm to xy chart which on bottom dock view . it not updated . i had to refresh the binding while in version 8.1.13 it working fine .


That’s the ‘information’ icon. Do you get any further info if you hover over it?

Nothing appears.

Any guidance on that unknown symbol which only appears once i upgraded to version 8.1.15

Update :
issue appears Only on version 8.1.15
on version 13 and 14 xychart are working fine and not showing this unknown symbol .