The Lego Batman Movie 2

After the release of the 2017 film, The Lego Batman, there were plans to make two sequels. Effect of night stated that there was a possible follow-up reported that 2022

Plot
The plot for the sequel is currently unknown. Some rumors said that Batman and Joker were to team up to face a threat from another universe: The Batman Who Laughs.

Why it Was Cancelled

 * 1) Lego agreed that the idea for a sequel to The Lego Batman movie wouldn't work.
 * 2) Although the first alone films were box office hits, Warner Brothers was disappointed with the box office returns of the previous films.
 * 3) Warner Bros. ended their movie deal with Lego after half a decade of releasing four films, which caused Lego to have a deal with Universal Pictures with a 5-year deal for Lego movies.

Results

 * The sequel film was permanently cancelled.
 * Both The Billion Brick Race and Cancelled Bionicle 5 and 6 Movies were permanently cancelled as a result of Warner Bros. giving up the film rights for Lego.
 * The Lego Batman Movie is a stand-alone film.