Countdown Error

I have a countdown into a UI Text that goes from 84 to 0, at the beginning it works well but when it reach 80 the game crash, but this only happens when I create the .exe file if I run this on the Unity Editor it works well… what it could be?98834-crash.jpg

you should provide more info. with all this lite information, i would suggest to not build an exe file if its crash.