Status: 200
Res.body: errMsg: err is undefined

That's real helpful mongo

I'm working right now with MongoDB that (un)fortunately it's our best option for the kind of business that the company works on.

But I have to say this is one of the shittest databases I ever worked in whole my life, and the worst part is who's designed the database fields and tables is a frontend developer and he has done all the whole bad practices in just in one single place.

Amazing.

Mongoloid DB

Piece of advice: don't use MongoDB. You are better off with relational databases.

But in your current situation, just deal with it.

technically though, it's correct.

since http 200 is "request successfully served", the error IS undefined (non-existent) in that case! =D

My colleague made the following error:
403: User is successfully authenticated

Mongo is totally helpful. But the backend you are using is not. Don't know how that is mongo's fault