I get the same error. Nothing is planted when it happens on mine.
Duplicator has been doing this for me ever since v14 I think. Every single time I hit a brick with it. It does work as intended, but the console spam is magnificent.
One of the duplicator's authors is Ephi, and I don't see how he can go on about RTB quality when this has been broken for about a year and I've reported it about 10 times.