Hi! isn’t it allowed to use bibtex entries @url or @webpage? Using one of them the html export complains that the entry is not found, for example:
Carro1998 not found in /Users/johannes/Documents/lehre/Informatik/Programmierparadigmen/Vorlesung/referenzen.bib org-ref-get-bibtex-entry-citation: Wrong type argument: stringp, nil Johannes
