Copy-paste fix pattern
library CB-Math
fn main() {
u256 shift = CB-Math.clamp(300, 0, 255)
save one << shift
}Why it happens
A number, index, shift amount, color, memory cap, or dimension is outside the supported range.
How to fix it
Check the message for the field name and clamp to the allowed range before passing it onward.
If the IDE reports a line number, fix that line first, then scan the previous line for an unclosed string, bracket, or block.