German Wikivoyage uses a namespace called News: . This conflicts with the news:// URL protocol, which is defined in $wgUrlProtocols by default and enabled on all Wikimedia sites.
The quickest resolution is to disable this protocol for dewikivoyage. Without doing so, many existing links are broken.
(It's been pointed out that this choice of namespace name is a bit odd since "News" is not a German word. The English word is however commonly used in German. Irrespective of the merits, there are lots of existing links to the "News:" namespace.)
Version: unspecified
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=41874
https://bugzilla.wikimedia.org/show_bug.cgi?id=47878