What’s the first thing you usually change when an AI project works in the example but not in your version?

You follow the example. Same steps. Same general setup. Everything looks right. And somehow… yours still doesn't work. So what do you check first? Do you go back through what you put in? Change the prompt? Check the data? Start looking at how everything is connected? Or do you end up changing five things at once and then have no idea what actually fixed it? What’s the most common “works perfectly in the example, breaks in my project” problem you’ve run into? Even better if it was something ridiculously small that ended up eating way too much of your time.