Amazon Linux 2 Systemctl commands timeout - systemd issue

A long live AWS EC2 vm gave me this when I try to check the httpd running status:

systemctl status httpd
Failed to get properties: Connection timed out

According google search: https://serverfault.com/questions/712928/systemctl-commands-timeout-when-ran-as-root I tried both:

kill -9 1

systemctl daemon-reexec

None of them works. The [reboot] only flack a bit and kick me out of system but did not really reboot. I have to run:

systemctl --force --force reboot

To force it reboot. Love systemd!