Problems embedding xaringan slides to blogdown

Hi there!

I am having some trouble embedding my xaringan slides to my blogdown. I've succesfully uploaded the slides to this url https://torrejonvalenzuela.com/slides/untitled#1 (not the real ones) but the knitr::include_url is not working properly, the iframe doesn't appear. Here's my attempt but it isn't working.

I have followed this instructions: https://timmastny.rbind.io/blog/embed-slides-knitr-blogdown/ and these other one https://blogdown-demo.rbind.io/2017/09/06/adding-r-markdown-documents-of-other-output-formats/

Any help?

Thanks in advance.

Alberto