As I mentioned in the previous post, most of us are still in 4-5 weeks after bloom which is a critical period for berry infection by black rot, powdery mildew, and downy mildew. I'm not advocating excessive application of fungicide here, but just reminding you that this is the critical time. If you have already protected your berries, you do not need to be panic.
So what will happen when you failed to protect your berries? Here are some examples from unsprayed vines in my plot.
Powdery mildew on berries