MediaWiki:Apierror-invalidoldimage

A fragment of the Garden of Remembering

The oldimage parameter has an invalid format.

Retrieved from ‘https://wiki.zaori.org/wiki/MediaWiki:Apierror-invalidoldimage’

I would compare/contrast Wikibase with Semantic MediaWiki, if I had any idea how Semantic MediaWiki worked. I know I had this conversation at dinner but I still don't think I get it.