MediaWiki:Apierror-info-singlepagerevision
Multiple pages or revisions were supplied, but $1prop=preloadcontent and $1prop=editintro may only be used with a single page and revision.
THIS IS ONLY A TESTWIKI! LH, MW 1.43.9, PHP 8.3.31, SMW 6
Multiple pages or revisions were supplied, but $1prop=preloadcontent and $1prop=editintro may only be used with a single page and revision.