[BUG] org-lint shows strange spurious message before exporting to LaTeX

[gerard . vermeulen]

Hi,

when I have an org file with a line like
#+cite_export: biblatex phys,biblabel=brackets,doi=true
and I invoke org-lint before I have exported the file to LaTeX,
then org-lint complains:
     9 nil   Unknown cite export processor %S

This strange message goes away when I invoke org-lint after
I have exported the file to LaTeX.

It is a minor annoyance, now I know how to make the message
disappear, but before I knew that, I thought there may be
something wrong with my #+cite_export: ... instead of
org-lint using some information produced during the LaTeX
export.

I have no idea how to fix this.

Regards -- Gerard