After updating to YNH v4.3.4.2, I can't browse to the server. It seems that NGINX has failed.

211219_1121_test-fmds_nginx-fail-after-update.txt

$ sudo journalctl -xe

...

Dec 18 22:21:10 test-fmds.noho.st systemd[1]: Failed to start A high performance web server and a reverse proxy server.
-- Subject: A start job for unit nginx.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
-- 
-- A start job for unit nginx.service has finished with a failure.
-- 
-- The job identifier is 366 and the job result is failed.
Dec 18 22:21:10 test-fmds.noho.st sudo[2079]: pam_unix(sudo:session): session closed for user root
Dec 18 22:21:15 test-fmds.noho.st ntpd[585]: error resolving pool 2.debian.pool.ntp.org: Temporary failure in name resolution
Dec 18 22:22:07 test-fmds.noho.st ntpd[585]: error resolving pool 3.debian.pool.ntp.org: Temporary failure in name resolution
Dec 18 22:22:08 test-fmds.noho.st ntpd[585]: error resolving pool 0.debian.pool.ntp.org: Temporary failure in name resolution
Dec 18 22:22:14 test-fmds.noho.st ntpd[585]: error resolving pool 1.debian.pool.ntp.org: Temporary failure in name resolution
Dec 18 22:22:16 test-fmds.noho.st slapd[794]: slap_global_control: unrecognized control: 1.3.6.1.4.1.4203.666.5.16
Dec 18 22:22:16 test-fmds.noho.st sudo[2143]:    admin : TTY=pts/0 ; PWD=/ ; USER=root ; COMMAND=/usr/bin/journalctl -xe
Dec 18 22:22:16 test-fmds.noho.st sudo[2143]: pam_unix(sudo:session): session opened for user root by admin(uid=0)

I have posted a question about this issue, on the Yunohost forums.