Explained: The yellow flag error that caught Leclerc out in Belgian GP qualifying

Ferrari Formula 1 driver Charles Leclerc was incorrectly shown a yellow flag at the end of Belgian Grand Prix qualifying, which cost him a place on the grid.In the dying seconds of qualifying at Spa-Francorchamps, Leclerc was 0.070s up on his first run when he entered the Bus Stop chicane.But as qualifying had finished, a yellow flag was out on pitlane while parc ferme was being formed ...