Pkgdown: error running pkgdown

[pachevalier]

Trying to run build_site() on my new package : https://github.com/SGMAP-AGD/opensirene, I've got the following error :

Error: inherits(x, "xml_node") is not TRUE

[jayhesselberth]

Your README is empty. Add a single markdown header (e.g. # opensirene) to README.md and the rest of the docs build.

[kforner]

still, should either not fail or fail with a more explicit message.