[system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)

Hello,

I found the following messages keep getting recorded to system logs:

# journalctl -u dbus
...
Oct 01 16:47:59 lxxx.lalunahost.com.br dbus-daemon[864]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)
Oct 01 16:48:27 lxxx.lalunahost.com.br dbus-daemon[864]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)
Oct 01 16:49:26 lxxx.lalunahost.com.br dbus-daemon[864]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)
Oct 01 16:50:26 lxxx.lalunahost.com.br dbus-daemon[864]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)

That means that 'dbus' cannot start 'org.freedesktop.systemd1', which, in turn, is used to manage all other service units. E.g., it is not possible to restart Nginx to apply a new configuration or start fail2ban:

# systemctl restart nginxFailed to restart nginx.service: Connection timed out
See system logs and 'systemctl status nginx.service' for details.
# systemctl start fail2ban
Failed to start fail2ban.service: Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)
See system logs and 'systemctl status fail2ban.service' for details.

Those symptoms show that there are issues with 'dbus' or 'systemd' itself. Please note that Plesk does not manage these low-level OS mechanisms in any way, but they are mandatory for proper Plesk functionality. Therefore, I can suggest contacting Ubuntu support channels, since these packages are a part of the Ubuntu project and only they can address such issues promptly and efficiently.

Could someone help me fix this problem?