Topic on Project:Support desk

When updating MW from 1.37 to 1.38 or 1.39 it gives this error "This version of the HeaderFooter extension requires MediaWiki 1.25+". Anyone had the same issue before? How can this be solved?

That sounds unlikely; the extension 1.39 branch requires MediaWiki 1.35.0 per line 9 . Are you sure you are running an extension version compatible with the MediaWiki version?