Either the website is stopped or the requested domain name is not configured for any website:
http://politik.geistlich.ch/politik/kanton-(1)/ja-zum-sanierungskredit-fur-das-kloster-fahr?showback=true
If you're an administrator of this site, you need to go to
Sites
and make sure the following domain name is configured either in the site properties or a domain alias of a running web site:
politik.geistlich.ch