"Insert KeyFrame" - Menu without properties

Hello, I noticed that when I press I on an animation Im currently doing, the “Insert Keyframe” Menu shows up without any property beneath it, before it went fine, it just happened a short time ago, I guess this is a bug…it is not dramatical actually…but maybe someone has an idea how to fix it?

I guess this is a bug…

Most likely user error. Have you set any keying sets (see the box in the timeline header with a key symbol). Attach a blend file to your post that shows the problem.