Clicking on [Foo](https://de.wikipedia.org/wiki/Spezial:Zufällige_Seite) gives the error
Such links worked some weeks ago.
If one replaces the "ä", as in [Foo](https://de.wikipedia.org/wiki/Spezial:Zufallige_Seite), the error does not appear (Wikipedia does not have such a page).
Clicking on
[Foo](https://de.wikipedia.org/wiki/Spezial:Zufällige_Seite)
gives the errorSuch links worked some weeks ago.
If one replaces the "ä", as in
[Foo](https://de.wikipedia.org/wiki/Spezial:Zufallige_Seite)
, the error does not appear (Wikipedia does not have such a page).