i meet some error

[huo-ye]

"Hello, I've been trying to use your code as a reference, but unfortunately, I've encountered some issues that prevent it from running successfully. I appreciate your work, and I was wondering if it would be possible to ask you a few questions about the code. I understand you may be busy, but any assistance you could provide would be greatly appreciated. Thank you!"

Question: Why is this situation occurring, and I'd like to inquire about how to resolve it?