Some of your image references are pointing at GitHub not Netlify.
For example with the sea image it’s trying to load it from https://quynh-vo-le.github.io/images/site/sea.jpg
I’m not familiar with the system you’re using, but at the top of your config.yaml I can see there’s a baseURL property that is currently set to that GitHub site.
It’s likely you just need to change that.