A backtrace won't give you the values of variables needed to identify that. I did specify "succinctly as possible with all the information necessary for a huma

A backtrace won't give you the values of variables needed to identify that. I did specify "succinctly as possible with all the information necessary for a human to be able to solve the issue". An error that doesn't have "all the information necessary" is a bad error. It can be worse than a backtrace. That doesn't mean a backtrace is good.