Adding bones in rigify

Hi!

I’m not sure if I can ask the question here but I’m kind of struggling and I can’t quite find the answer I’m seeking.


I want to add a bone here to be able to rotate the back part of the foot. I extract the bone from the foot.R and parent the new bone back to it, I change the rig type to super copy.
However when I try to click regenerate rig I get this message:

Can I ask how to fix it? This is my first time rigging in Blender (and rigging in general, at least in part few years) and I don’t really know where to go :slight_smile: