How to fix "nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead"

[Betonhaus]

Whenever I check the nginx logs I get a LOT of startup entries that say "nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead"

How do I fix that? I'm worried that if it's deprecated then eventually it will be removed then everything breaks.

nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/10.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/10.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/13.conf:19
nginx: [warn] protocol options redefined for 0.0.0.0:443 in /data/nginx/proxy_host/13.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/13.conf:20
nginx: [warn] protocol options redefined for [::]:443 in /data/nginx/proxy_host/13.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/17.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/17.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/20.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/20.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/29.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/29.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/3.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/3.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/31.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/31.conf:20
nginx: [warn] protocol options redefined for 0.0.0.0:443 in /data/nginx/proxy_host/32.conf:19
nginx: [warn] protocol options redefined for [::]:443 in /data/nginx/proxy_host/32.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/4.conf:19
nginx: [warn] protocol options redefined for 0.0.0.0:443 in /data/nginx/proxy_host/4.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/4.conf:20
nginx: [warn] protocol options redefined for [::]:443 in /data/nginx/proxy_host/4.conf:20
nginx: [warn] protocol options redefined for 0.0.0.0:443 in /data/nginx/proxy_host/5.conf:19
nginx: [warn] protocol options redefined for [::]:443 in /data/nginx/proxy_host/5.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/7.conf:19
nginx: [warn] protocol options redefined for 0.0.0.0:443 in /data/nginx/proxy_host/7.conf:19
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/proxy_host/7.conf:20
nginx: [warn] protocol options redefined for [::]:443 in /data/nginx/proxy_host/7.conf:20
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/redirection_host/1.conf:15
nginx: [warn] the "listen ... http2" directive is deprecated, use the "http2" directive instead in /data/nginx/redirection_host/1.conf:16