The SP and WSC (Oiosaml-net.dk TEST) (funktionscertifikat) referenced in Web.config expired on December 1, 2023:
<SigningCertificate findValue="a402bb172929ae0d0ada62f6864329c35dc29483" storeLocation="LocalMachine" storeName="My" x509FindType="FindByThumbprint"/>
The WebsiteDemo is no longer runnable and fails with
Found no valid certificate configured in the certificate configuration. Make sure at least one valid certificate is configured.