New Installation, setting DKIM fails

SYSTEM INFORMATION
OS type and version REQUIRED
Webmin version REQUIRED
Virtualmin version REQUIRED
Webserver version REQUIRED
Related packages SUGGESTED
OS: Ubuntu 24.04.4
Virtualmin Version: 8.1.0 Professional (LAMP)
Webmin Version: 2.630
DKIM

When I tried to activate DKIM, I received the message “Failed to get properties: Failed to activate service ‘org.freedesktop.systemd1’: timed out (service_start_timeout=25000ms)”

This is a new installation, no additional software yet,. All I have done so far is that I added tow virtual servers and a handful of mail users

solved: I did a forced reboot