Hello, I am not entirely sure but I believe that recent changes in Emacs's eldoc.el make org-eldoc (found in the contrib directory for org) no longer work. At first glance, an argument is now required for org-eldoc-documentation-function but this only postpones the error...
Probably only an issue if you are tracking Emacs as I am. Thank you, eric -- : Eric S Fraga via Emacs 28.0.50, Org release_9.3.7-682-geac255
