Describe the bug

使用域名代理模式按照官方文档配置Nginx +http_proxy _port

本地https 网站报502
其他http网站都正常、、

nps配置档：
#HTTP(S) proxy port, no startup if empty
http_proxy_ip=0.0.0.0
http_proxy_port=9999
https_proxy_port=
https_just_proxy=true
#default https certificate setting
https_default_cert_file=conf/server.pem
https_default_key_file=conf/server.key

nginx:
server
{
listen 443 ssl http2;
#listen [::]:443 ssl http2;
server_name xx.com ;
index index.html index.htm index.php default.html default.htm default.php;
root /home/wwwroot/xx.com;

ssl_certificate /usr/local/nginx/conf/ssl/xx.com/fullchain.cer;
    ssl_certificate_key /usr/local/nginx/conf/ssl/xx.com/vm.igee.ml.key;
    ssl_session_timeout 5m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;
    ssl_ciphers "TLS13-AES-256-GCM-SHA384:TLS13-CHACHA20-POLY1305-SHA256:TLS13-AES-128-GCM-SHA256:TLS13-AES-128-CCM-8-SHA256:TLS13-AES-128-CCM-SHA256:EECDH+CHACHA20:EECDH+CHACHA20-draft:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5";
    ssl_session_cache builtin:1000 shared:SSL:10m;
    # openssl dhparam -out /usr/local/nginx/conf/ssl/dhparam.pem 2048
    ssl_dhparam /usr/local/nginx/conf/ssl/dhparam.pem;

    location / {
    proxy_set_header Host  $http_host;
    proxy_pass http://127.0.0.1:9999;
    }

    access_log off;
}

Additional context

配置的域名代理
访问xx.com代理本地Https网站报错。
其他代理本地Http都是正常，，，

502 Bad Gateway
nginx