root@nss1:~# nginx -T
nginx: [warn] conflicting server name "doh.example.com" on 0.0.0.0:80, ignored
nginx: [warn] conflicting server name "dot.example.com" on 0.0.0.0:80, ignored
nginx: [warn] conflicting server name "doh.example.com" on 0.0.0.0:443, ignored
nginx: [warn] conflicting server name "dot.example.com" on 0.0.0.0:443, ignored
nginx: [emerg] the invalid "http2" parameter in /etc/nginx/streams/dns-over-https:44
nginx: configuration file /etc/nginx/nginx.conf test failed