Why is NullReferenceException not giving the name of the identifier?

This happens to me all the time. I have code that breaks at runtime with NullReferenceException

:

I am being told the original file and line number, but not the actual location of the attempted link to what turned out to be null, in which case I cannot tell if it is _request

or Banker

.

What is the main reason why such valuable information has been omitted?