Adam Bogdan has taken the full blame for the 3-0 loss to Watford and hopes to learn from it.
The Hungarian international made his debut after Mignolet picked up a hamstring injury.
It was a disaster for Bogdan, as he fumbled the corner that led to the opener.
Klopp stated Bogdan was fouled, but the goalie has taken all the blame.
“It was a wrong time to concede,” he said. “I dropped the first ball which is a mistake, I hold my hands up, but I felt I recovered the ball and he kicked it out of my hands.
“But if I catch the first one, it’s not a goal. I had both hands on the ball, but we are talking about a split-second. It’s not easy for the referee to see.
“Something went wrong, I have to think about it again. It was a mistake and I will learn from it.
“I felt good, it wasn’t nerves. I trained hard for this chance and it started as a nightmare. I don’t blame the referee or anyone else.
“I go back to train and work hard.”