I need to chime in! After leaving my dark ages behind be last year, I discovered this community and the stunning work you guys accomplish!
Especially the threads regarding the 42056 Porsche and the enhancements made by Didumos69 and others are amazing!
Firstly, I built the model according to the original instructions, disassembled it and applied all the modifications from the Unofficial Errata. The improvements are awesome. The next project will be to disassemble it again and make it 'Ultimate Playable'. Since I have never worked with LDD, this will be a new learning exercise.
Back to topic: tokenize, I ended up with the same finding as you, I was left with one of these elements as well. Unless the both of us made the same mistake, I think this is an oversight in the Unofficial Errata. I believe, the connector in question is the one marked in the attached picture.