Tidygrraph example not working

Hi,

I am trying to learn more about tidygraph, so i am following this blog:
https://www.data-imaginist.com/2017/introducing-tidygraph/

Few months ago the examples in the blog worked very well, but today they do
not.

I just installed R x64 4.1.1, so i should be up and running with the latest
on a Windows machine.