[Nut-upsuser] nut-server fails to start

[bobby]

I am running nut server on a raspberry pi.  Doing a status after bootup, I
see this:
● nut-server.service - Network UPS Tools - power devices information server
   Loaded: loaded (/lib/systemd/system/nut-server.service; enabled; vendor
preset: enabled)
   Active: failed (Result: exit-code) since Tue 2021-08-31 18:11:54 EDT;
48s ago
  Process: 448 ExecStart=/sbin/upsd (code=exited, status=1/FAILURE)

Aug 31 18:11:54 NUT upsd[448]: not listening on 192.168.2.105 port 3493
Aug 31 18:11:54 NUT upsd[448]: listening on 127.0.0.1 port 3493
Aug 31 18:11:54 NUT upsd[448]: no listening interface available
Aug 31 18:11:54 NUT upsd[448]: not listening on 192.168.2.105 port 3493
Aug 31 18:11:54 NUT upsd[448]: listening on 127.0.0.1 port 3493
Aug 31 18:11:54 NUT upsd[448]: no listening interface available
Aug 31 18:11:54 NUT upsd[448]: Network UPS Tools upsd 2.7.4
Aug 31 18:11:54 NUT systemd[1]: nut-server.service: Control process exited,
code=exited, status=1/FAILURE
Aug 31 18:11:54 NUT systemd[1]: nut-server.service: Failed with result
'exit-code'.
Aug 31 18:11:54 NUT systemd[1]: Failed to start Network UPS Tools - power
devices information server.

To try to fix this, I added to (root's) crontab:
@reboot    upsdrvctl start && upsd && systemctl start nut-server.service

But it still fails to start on boot up.
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