I reviewed my some of my code and figured out that I'm one of this terrible persons, which haven't spent enough time to show an useful output. I should fix this

I reviewed my some of my code and figured out that I'm one of this terrible persons, which haven't spent enough time to show an useful output. I should fix this now ;) A useful log output can be a real time saver. I also seen applications which just showed "an error occurred", so I had still no idea what causes this error message.