public void fixInvalidMinWidthHeight() {
        for (var drawable : getAtlasData().getDrawables()) {
            if (!drawable.tiled) {
                drawable.minWidth = -1;
                drawable.minHeight = -1;
            }
        }
    }
Checks if this is an old project and has drawables with minWidth or minHeight incorrectly set to 0. This error
was resolved in version 30.
@return
@see ProjectData#fixInvalidMinWidthHeight()
core/src/com/ray3k/skincomposer/data/ProjectData.java