Barcelona boss Ernesto Valverde was at a loss for words as his side crashed out of the Champions League with a 4-0 loss at Liverpool.
The Catalan side surrendered a 3-0 lead from their Camp Nou victory last week, as Jurgen Klopp's side reached their second successive Champions League final.
With Barcelona struggling on the pitch, their manager was unable to explain their capitulation during his post match interview.
"They started aggressively, as we expected, but to lose like this is inexcusable.
"To begin the game with a 3-0 lead and to lose 4-0 is simply unacceptable.
"This has happened to us for the second year in a row, and this is especially painful for everyone involved."
With the game poised at 3-0, Valverde made two defensive substitutions, but his side were unable to hold off Liverpool's push for a fourth goal.
"I don't know what happened with the fourth goal,
"When I saw the cross comes into our area, it was already in the goal.
"The next few days will be horrible, we know that, but we must get through it.
"All I can do is apologise to the fans that have travelled."