make sure that you have set the the [ isAssetImage ] value base on your source.
Here is the rest of properties that can be modyfied
/// List of image/widgets to be shown in the carousel; Accepts two types of link./// For example: `https://...jpg` for online images and `assets/...` for local images.finalList<dynamic> items;
/// Specifies the type of image addresses in [imagesLink]./// Must be `false` if [imagesLink] contains online images./// Must be `true` if [imagesLink] contains local images.finalbool assetImage;
/// Set as the image slider [width]./// Defaults to 300.finaldouble width;
/// Set as the image slider [height]./// Defaults to 450.finaldouble height;
/// Returns the page index after animation is done .finalFunction(int pageIndex)? onChange;
/// Runs the given code onPress .finalFunction()? onTap;
/// Set as the main frames [backgroundColor].finalColor? backgroundColor;
/// Determines the value of the [fit] property of the images/// Defaults to BoxFit.cover.finalBoxFit fit;
/// Determines the space between two [H3DCard]./// Defaults to 30.finaldouble layersGap;
/// Determines the perspective transformation of the [H3DCard] when being animated./// Defaults to 0.0015.finaldouble perspectiveFactor;
/// Determines the space between two [H3DCard]./// Defaults to 30.finalBoxBorder? border;
/// Determines the [borderRadius] of the [H3DCard]./// Defaults to 30.finalBorderRadius borderRadius;
/// Determines the clip behaviour of the child widget./// Defaults to [Clip.hardEdge].finalClip childClip;
/// Determines [Duration] of transition animation./// Defaults to 500 milliseconds.finalDuration transitionDuration;
/// Determines [Visibility] of the transition arrows./// Defaults to True.finalbool arrowControllersVisibility;
/// Determines [Color] of the transition arrows./// Defaults to [Colors.white].finalColor arrowControllersColor;
/// Determines [tag] of the selected [H3DCard].finalString heroTag;
```#