pkgdown: some references showing 404 and image on readme doesn't show on home

Hi, and welcome!

Please see the FAQ: What's a reproducible example (`reprex`) and how do I do one? Using a reprex, complete with representative data will attract quicker and more answers for coding questions.

This looks like a deployment issue perhaps best answered on the travis site

RMarkdown only supports a few deployment technologies, and that isn't one of them.

But please do come back with non-deployment issues.