Nginx 问题,停止和启动应用时出现 "502 Bad Gateway"

root@amsaal:/var/discourse# ./launcher logs app
检测到 x86_64 架构。
run-parts: executing /etc/runit/1.d/00-ensure-links
run-parts: executing /etc/runit/1.d/00-fix-var-logs
run-parts: executing /etc/runit/1.d/01-cleanup-web-pids
run-parts: executing /etc/runit/1.d/anacron
run-parts: executing /etc/runit/1.d/cleanup-pids
正在清理过时的 PID 文件
run-parts: executing /etc/runit/1.d/copy-env
run-parts: executing /etc/runit/1.d/letsencrypt
[Mon 15 Apr 2024 10:12:06 AM UTC] 域名未更改。
[Mon 15 Apr 2024 10:12:06 AM UTC] 跳过,下次续订时间为:2024-06-12T11:28:31Z
[Mon 15 Apr 2024 10:12:06 AM UTC] 添加 '--force' 以强制续订。
[Mon 15 Apr 2024 10:12:07 AM UTC] 将密钥安装到:/shared/ssl/amsaal.net.key
[Mon 15 Apr 2024 10:12:07 AM UTC] 将完整链安装到:/shared/ssl/amsaal.net.cer
[Mon 15 Apr 2024 10:12:07 AM UTC] 运行重载命令:sv reload nginx
warning: nginx: 无法打开 supervise/ok:文件不存在
[Mon 15 Apr 2024 10:12:07 AM UTC] 重新加载错误:
[Mon 15 Apr 2024 10:12:07 AM UTC] 域名未更改。
[Mon 15 Apr 2024 10:12:07 AM UTC] 跳过,下次续订时间为:2024-06-12T11:28:38Z
[Mon 15 Apr 2024 10:12:07 AM UTC] 添加 '--force' 以强制续订。
[Mon 15 Apr 2024 10:12:08 AM UTC] 将密钥安装到:/shared/ssl/amsaal.net_ecc.key
[Mon 15 Apr 2024 10:12:08 AM UTC] 将完整链安装到:/shared/ssl/amsaal.net_ecc.cer
[Mon 15 Apr 2024 10:12:08 AM UTC] 运行重载命令:sv reload nginx
warning: nginx: 无法打开 supervise/ok:文件不存在
[Mon 15 Apr 2024 10:12:08 AM UTC] 重新加载错误:
已启动 runsvdir,PID 为 537
ok: run: redis: (pid 550) 0s
ok: run: postgres: (pid 551) 0s
nginx: [warn] "listen ... http2" 指令已弃用,请在 /etc/nginx/conf.d/discourse.conf:60 中使用 "http2" 指令
supervisor pid: 545 unicorn pid: 577
root@amsaal:/var/discourse#