Error message without any line?

Why am I getting an error message but doesn’t say where it comes from?
I’m working with a friend and he said he didn’t modify any scripts.

Did you use “warn” in any scripts? Might be the problem?
ex

warn(something)

No, plus warn produces orange warnings not red.

Fair point. Just check over your codes, and add :WaitForChild() in. It might be looking for something, then not finding it. Could also be a studio glitch.

Of course, I did those all. Not working. This doesn’t happen in studio, it happens in the real game.

Maybe an empty error occurred.

error("A") --> error("A"):1: A
error(" ") --> error(" "):1:

image

Or the full name is too long.

Not what happened either, looked into that.

According to this:
https://blog.roblox.com/2014/04/find-bugs-in-live-games-with-the-developer-console/

It is a critical mistake, make sure everything is well written and use Script Analysis to see if there is something wrong.
You could also put what is missing on a separate map and see if it happens there too.