Barcelona president Joan Laporta admits there remains great anger over Sunday's defeat at Real Madrid.
Barca have threatened to take the result to the courts after Lamine Yamal had a goal denied by VAR in the 3-2 loss.
At today's media conference to confirm coach Xavi for next season, Laporta: "We were outraged by the refereeing and we are already doing what we have to do.
"What the board did was comment on something that came after the game at the Bernabu. We were outraged by the refereeing and we are already doing what we have to do. We thought it was Lamine's goal and the game is distorted.
"And we will reach the final consequences. It was an abuse.
"That only one of the 37 cameras that shows the goal does not work ... "