Jennifer Garner said sorry for her acting being a “little off” the day after she agreed to divorce her ex-husband Ben Affleck. The actress, 52, was left devastated when she and the ‘Batman v Superman’ star, also 52, ended their 10-year marriage in 2018 after they had children Violet, 18, Fin, 15, and 12-year-old Samuel. She was starring in the 2016 fantasy comedy ‘Nine Lives’ at the time the former couple were splitting, and its director Barry Sonnenfeld, 71, has now opened up about how she apologised for her performance on set being below par during her painful break-up. He said in his new au…