Lots of films have bad days. Some of them are just slightly annoying, while others end up being a full-fledged clusterfuck. You can't get rid of them entirely, you just have to hope it isn't too bad and doesn't have a domino effect on the whole project, as one really terrible day can kill a film.
You know the movie where the white kid from the country goes to the big city for the first time, only to see the bright lights have been replaced by urban blight, graffiti, old cars on blocks, and all sorts of frightening stereotypes? That's what it's like to drive through Camden, NJ, even on a Monday at 10am.