I found the answer. If you look in your logcat you see, that it tries to cast the Context to CordovaInterface. The context is the Activity.
There it fails. You probably made the Fragment be CordovaInterface. That is what I did.
You will have to make the Activity a CordovaInterface and from the Activity forward the events (onMessage, ...) to the Fragment.
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.