Barcelona, after losing 1-4 in the first leg, started the match against PSG brilliantly. They dominated the opening half an hour of the game.
However, the Catalans failed to put away their chances and an individual error punished Ronald Koeman.
Just before the half hour, Lenglet conceded a silly penalty on Icardi after accidentally stepping on the Argentine striker's heel when he was looking to hit home the cross.
After reviewing the pitchside monitor, the referee pointed to the penalty spot. Mbappe, who got a hat-trick in the first leg. kept his cool to put PSG 1-0 up.