Nsinvalidargumentexception' reason 'an avplayeritem cannot be associated with more than one instance of avplayer?

Had same experience. Realized movieSourceType was set incorrectly. For example, movieSourceType was set to MPMovieSourceTypeStreaming when it should have been MPMovieSourceTypeFile for a movie embedded in the bundle.

Had same issue, try setting ContentURL after Setting the SourceType like below.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.