更改

function p.render(frame)

function p.render(frame)

     local pagename = frame:expandTemplate{title="PAGENAME"}

     local pagename = frame.args.pagename

     local type_flag, group_name, page_name

     local type_flag, group_name, page_name

     type_flag, group_name, page_name = PageName.parse(pagename)

     type_flag, group_name, page_name = PageName.parse(pagename)