Former Manchester City manager, Pep Guardiola, has listed the various factors that stopped Barcelona from winning the Champions League.
The LaLiga giants have not lifted the trophy since 2015, when they beat Juventus 3-1 in the final.
Guardiola, who won the Champions League twice when he was Barca manager, has warned against an obsession with the competition.
He said: “The Champions League is a competition that destroys projects, and I hope that’s not the case at Barça.
“We must not think that just because you don’t win it, everything that has been built is no good.
“The league is the competition that gives you consistency and continuity.
“In the Champions League, you need to reach the decisive stages in good condition, without injuries, and refereeing also has a huge impact.”