How to read an error message without panicking
Error messages look alarming but they follow a pattern. Once you know where to look, you can hand the right piece to AI and get a real fix instead of a guess.
What this means
When something breaks, the screen fills with red text and it feels like everything is ruined. But error messages are actually structured. They have a type (what kind of problem it is), a location (which file and line), and a reason (what went wrong). Most of the text is noise — the first line and the last meaningful line are almost always the parts that matter.
What to do
When you see an error, do this before pasting anything into AI: find the first line that starts with a capital word like "Error", "TypeError", "NullPointerException", or similar. Then find the line that mentions your file — not a library file. Copy both lines. Paste them into Claude or ChatGPT with this message: "Here is the error and the line it points to. What does this mean and what should I change?" Do not paste 200 lines of stack trace — that makes AI less accurate, not more.
Try this prompt
Here is an error I am seeing: [paste the first error line here] [paste the line that mentions your file here] What does this mean in plain English, and what is the safest fix? Please change only the minimum amount of code needed.