Augmented Reality related object error

Asslam o Alaikum. I’m Ahmed from Pakistan and just start working on Unreal Engine I’m very beginner. I’m facing error of “Attempting to start AR session without session config Object” while applying AR on my application which contains many object on screen using third person character layout. its initial steps I learnt from Youtube but now I’m stucked please anyone can guide me.!

@anonymous_user_37b02e9c DID YOU GETA SOLLUTION FOR THIS