Loaded failed failed Refresh fwupd metadata and update motd

I see command systemctl so often that I did it. I tried it.
The lines are 215 characters long so, after typing systemctl > s.txt I opened the s.txt file.

And, misery, there is an error.

Line fwupd-refresh.service ends with
loaded failed failed Refresh fwupd metadata and update motd

What does it mean ? I looked it up on the net and dug a little deeper with the command : systemctl status fwupd-refresh.service which gave :
? fwupd-refresh.service - Refresh fwupd metadata and update motd
Loaded: loaded (/lib/systemd/system/fwupd-refresh.service; static; vendor preset: disabled)
Active: failed (Result: exit-code) since Tue 2021-02-02 23:18:21 EST; 6h ago
TriggeredBy: ? fwupd-refresh.timer
Docs: man:fwupdmgr(1)
Process: 7520 ExecStart=/usr/bin/fwupdmgr refresh --no-metadata-check (code=exited, status=1/FAILURE)
Main PID: 7520 (code=exited, status=1/FAILURE)

fév 02 23:18:19 Vento systemd[1]: Starting Refresh fwupd metadata and update motd…
fév 02 23:18:20 Vento fwupdmgr[7520]: Fetching metadata https://cdn.fwupd.org/downloads/firmware.xml.gz
fév 02 23:18:21 Vento fwupdmgr[7520]: Fetching signature https://cdn.fwupd.org/downloads/firmware.xml.gz.asc
fév 02 23:18:21 Vento systemd[1]: fwupd-refresh.service: Main process exited, code=exited, status=1/FAILURE
fév 02 23:18:21 Vento systemd[1]: fwupd-refresh.service: Failed with result ‘exit-code’.
fév 02 23:18:21 Vento systemd[1]: Failed to start Refresh fwupd metadata and update motd.

What does it mean ?