404. That’s an error.
The requested URL /_/+1/confirm?hl=de&url=http%3A%2F%2Fwww.spiegel.de%2Fpolitik%2Fdeutschland%2Fa-812719.html&title=%22Zukunftsdialog%22%3A%20Merkel%20startet%20Diskussion%20mit%20B%C3%BCrgern%20im%20Internet%20-%20SPIEGEL%20ONLINE%20-%20Politik
was not found on this server. That’s all we know.