MediaWiki:Apierror-info-singlepagerevision
From EotL - End of the Line MUD
Multiple pages or revisions were supplied, but $1prop=preloadcontent and $1prop=editintro may only be used with a single page and revision.
Multiple pages or revisions were supplied, but $1prop=preloadcontent and $1prop=editintro may only be used with a single page and revision.