In the book section of Chapter 9, the follow is listed as the update to scnRender.render():
public class Render {
...
public void render(EngCtx engCtx) {
...
scnRender.render(engCtx, vkCtx, cmdBuffer, modelsCache, materialsCache, imageIndex);
...
}
...
}
When it should be:
public class Render {
...
public void render(EngCtx engCtx) {
...
scnRender.render(engCtx, vkCtx, cmdBuffer, modelsCache, materialsCache, imageIndex, currentFrame);
...
}
...
}