Warning: I thought "just read the error message" was lazy advice until one saved me 3 hours
I kept seeing people in r/learnpython say to slow down and read the full error instead of guessing, and I thought it was a brush-off answer. Then my Flask app broke on line 47 last month and instead of panicking I actually read it, and it said my dict key was missing a quote, fixed in 10 seconds. What is the one beginner tip you ignored for way too long before it finally clicked?