404. That’s an error.

The requested URL /_/+1/confirm?hl=de&url=http%3A%2F%2Fwww.spiegel.de%2Feinestages%2F20-jahre-mauerfall-a-948314.html&title=Mauerfall%201989%3A%20Und%20pl%C3%B6tzlich%20war%20ein%20Loch%20im%20Zaun%20-%20SPIEGEL%20ONLINE%20-%20einestages was not found on this server. That’s all we know.