I'm about to upgrade dw from php 5 to php 7.3 with current sources.
The ported version displays an empty Übersicht (Sitemmap) page, but the wiki is all but empty.
Which source file contains the code to generate the Übersicht?
Strange: after switching language to english and back to german, the sitemap is displayed correctly.
Removing the cache didn't help.
More strange: a second trial to open the sitemap, displayed an empty page.
The problem still persists.