There's a school of thought that would say that by default, error messages shouldn't be a huge scary wall of text, because you have to consider that a majority of the people who would see an error message are not developers, and have no idea what to do with that information.
It should certainly be possible for someone who can diagnose an error to see the details, but making it the default can be problematic when the message has a chance of being shown to real end users.
It should certainly be possible for someone who can diagnose an error to see the details, but making it the default can be problematic when the message has a chance of being shown to real end users.