There are many times when someone will feel they do not have anything to talk about in therapy. And often, that is when therapy is most effective. Having nothing to talk about can indicate that you are stuck. If your overall issue is not resolved yet, then being stuck is usually about issues that you are either not aware of yet or do not want to face.
Your therapy is supposed to be directed by you. The therapist is there to guide you, but they cannot bring up topics. If they did that, you would not get much resolved because what they brought up would not be what you need to work on but instead what they feel you need to work on.
You may want to talk about that fact that you have nothing to talk about. This sounds odd, but as I mentioned, having nothing to bring up usually means there are things that are bothering you that you cannot get in touch with. Your therapist can help you figure out what that might be.