Type Check Issue

[nvishurl]

Hello
I have one pretty dumb issue which I have about… one or two years I guess. Every time I use type checking thing it underlines as error in Script Editor (attached screenshot below)

I tried to change accounts, reinstalling studio, reinstalling windows, changing windows to 11 and then back to 10 and then back to 11, reset all the settings, change every possible setting, nothing worked
Help please I can’t live with this anymore

[stuart2202]

ChildAdded returns an instance, but you have type checked it as a BasePart. The orange lines are because it may not be a BasePart. If you changed it to Child : Instance then they would go away.