I am trying to create to create a split screen. It works, but it has some runtime errors

Blueprint Runtime Error: Accessed None trying to read property CallFunc_CreatePlayer_ReturnValue2 from function" ‘ExecuteUberGraph_kitchen2_recipe’ from node: set view Target with Blend.

What should I do to fix the error. I think due to this error, UE4 sometimes might crash, My engine Version: 4.17 Operating System: Ubuntu16.04