Barcelona manager Ernesto Valverde said the team "had to suffer" in their unconvincing 1-0 win over Real Valladolid on Saturday.
The Blaugrana won courtesy of a first-half Lionel Messi penalty, but the Argentinian missed a second spot-kick after the break.
Per Sport's Jordi Gil, Valverde said:
"It was a hard-fought win, we had to suffer. They were well set up. In the first half we were slow circulating the ball, we lacked clarity and were exposed on the break.
"In general, though, they didn't create chances.