Batman v Superman: Dawn of Justice certainly has its fair share of fans, but there are a lot of people who really didn't like what Zack Snyder did with that movie (particularly critics). While the filmmaker weighed in on the reviews when the movie's press tour reached the UK, reporters inevitably pushed him for more on that backlash and the impact it may have had on how Justice League has developed.

"When Batman v Superman came out, I was like, ‘Wow, okay, oof,’" the filmmaker admitted in an interview with Vulture. "It did catch me off guard. I have had to, in my mind, make an adjustment. I do think that the tone of Justice League has changed because of what the fans have said." It seems to have worked too, because all we keep hearing in these set visits is how much fun the movie looks! 

Regardless, the filmmaker was quick to defend his vision for these heroes in Batman v Superman
Source: COMIC BOOK MOVIES