GeoGen Script reference
GGE2309

The script attempted to specify a size (or length) outside of the range of allowed values (0 to 4294967295).

This error occurs when such number is passed to a standard library function which expectes it to be a size/length.

var map = HeightMap.RadialGradient([0, 0], 9999999999999999999999999, 1, 0); // GGE2309 in the radius argument