As the mysqli_stmt_fetch() method can return null and false you have to use to check if the returned value is false or not (or if it is null or not). Otherwise you interpret the return value null as an error code, which it isn't.
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.