#SmileBASIC, <s>12</s> 11 bytes#

 ?@L*EXP(22)

Error message (8 or 9 bytes):

 Overflow

Must be run from the console, otherwise it outputs a line number. Normally errors are formatted like `{error} in {slot}:{line}({func}:{arg})`, but this error isn't caused by a function and doesn't have a line number so only the error name is shown.

`EXP(x)` returns `e^x`, and `e^22` is `3584912846.131588`. This is outside the 32 bit signed integer range of `-2147483648` to `2147483647`. Multiplying a string (`@L`) by this value converts it to an integer, causing an overflow error.