Error popup during post-processing: "NoneType" object is not iterable

Many apologies for being the problem child and encountering multiple errors.
I decided to start post-processing without manually verifying the results. However, shortly after I clicked “Start post-processing”, I received an error popup that “NoneType” object is not iterable.

I have a feeling that all your errors are connected…

Let’s see what we find in debug mode (see response in thread below).