Wait a couple of minutes. I need to fix something else.
[update]
Here it is. At that moment I had problems with Let’s Encrypt.
[update #2]
Simply removing the 127.0.0.1 line and rebooting didn’t work. I’ll try replacing localhost with 127.0.0.1 in duniter.conf now. Once that does or doesn’t work, I’ll go to bed.
[update #3]
Same problem. Only difference is that upstream: "http://[::1]:9220/"changed to upstream: "http://127.0.0.1:9220/" in the error log.
Bonne nuit.