Ah, I love useful errors like "No codeFrame could be generated"

I still think the best and most useful one I had was when I tried to login with valid credentials and got 'unknown error occured' from backend.

If found in a log file intended for the developer sure, but outside that context they would be better off with just “Error”

Well, when Windows 10 has some problem with some structure in a file system, you can get an error message like "Wrong argument!" when trying to change permissions.

Explorer then just doesn't copy or open files - without any error message at all.

@ostream Right? How hard is it to pass error message?