We know that despite what is shown in the movies and such, most chess games don't end by a "checkmate" move and oftentimes one side realizes that they are losing and resigns before the end. Now this begs the question: Has there been any serious games in the history of chess that the resignation was itself a blunder? Meaning that, the person who resigned had a chance of winning that they missed to spot at the time.
By serious game I mean a GM-level (or if there is none, a near-GM-level) match. To be more specific, let's exclude the timed games that the possibly-winning side has lost by timeout. Also there was some games that one side deliberately resigned due to some personal reasons. Those are also not the ones that I am looking for.