The film was finished without Brown, but no other director was credited on the final production.
I can’t name another example like Wonder Park, though, where there’s just no director credited at all.
Wonder Park is an animated movie about a “magnificent amusement park where the imagination of a wildly creative girl named June comes alive.”
Walter Hill directed Supernova, for example, but the film was heavily reshot and reedited without his input, and was eventually credited to “Thomas Lee.”