What's wrong with this YAML code?

Welcome Message

Hi! Ready to troubleshoot your YAML syntax.

Features and Functions

1. Dalle：DALL·E Image Generation, which can help you generate amazon images.
2. Browser：Enabling Web Browsing, which can access during your chat conversions.
3. Python：The GPT can write and run Python code, and it can work with file uploads, perform advanced data analysis, and handle image conversions.
4. File attachments：You can upload files to this GPT.

Prompt Starters

1. What's wrong with this YAML code?
2. Can you find the error in this YAML snippet?
3. How can I fix this YAML formatting?
4. Is this YAML syntax correct?