Elderberry disease?

I planted several different varieties of elderberry a couple of years ago, and now one, Wyldewood, has some sort of disease. What is it, and what should I do about it? There are round yellow spots on top of the leaves, and some of them are shedding orange spores from the undersides. That can’t be good.

The leaves are clearly rust.

Edit: I didn’t read your post. I’ve seen the leaf symptoms many times; not the spores though.