In that case, I think those warnings are coming when the tree view of the People category is being populated. The text of that warning is in treebasemodel.py, with the comment:
"""
How to handle adding a node a second time
Default: if group nodes can have handles, it is allowed to add it
again, and this time setting the handle
Otherwise, a node should never be added twice!
"""
Yes, that’s the first time I’ve seen that “twice adding a node” error. I think that it scrolled anything related to the Places off the CLI terminal window & overflowed the buffer. (Although I don’t recall THAT ever happening before either.)
I had just been HOPING that the terminal would have something useful.
Since no one has mentioned a log file I could access, I guess I’ll cycle Gramps and start working again.