Certificate has expired

Accordingly, in the further execution of the instruction fails:

SAML SSO

eval "$(ucr shell domainname)"
install -o root -g samlcgi -m 0644 /etc/univention/ssl/"ucs-sso.${domainname}"/cert.pem /etc/simplesamlphp/"ucs-sso.${domainname}-idp-certificate.crt"
install -o root -g samlcgi -m 0640 /etc/univention/ssl/"ucs-sso.${domainname}"/private.key /etc/simplesamlphp/"ucs-sso.${domainname}-idp-certificate.key"
service univention-saml restart

with the error:

root@tux:/etc/univention/ssl# eval "$(ucr shell domainname)"
root@tux:/etc/univention/ssl# install -o root -g samlcgi -m 0644 /etc/univention/ssl/"ucs-sso.${domainname}"/cert.pem /etc/simplesamlphp/"ucs-sso.${domainname}-idp-certificate.crt"
install: der Aufruf von stat für '/etc/univention/ssl/ucs-sso.dawa.lan/cert.pem' ist nicht möglich: Datei oder Verzeichnis nicht gefunden