If you work with anything but a very simple program, you often must guess what could be the cause(s) of your issue in order to know where to look. The more experienced you are, the more accurate your guesses will be.
I've worked with far too many people who, along with not "Reading the error message" do just guess at how to get rid of the error message. Like literal stab in the dark, what if I just change this and re-run it.
> Don’t Guess
If you work with anything but a very simple program, you often must guess what could be the cause(s) of your issue in order to know where to look. The more experienced you are, the more accurate your guesses will be.