blog 和admin 前端 API 502

[mkersonJ]

后端使用IP：8080，显示20000，但是无论blog还是admin都无法连接后端，显示 API 502 bad Gateway，

blog： Request URL:
https://doc.netheart.xyz/api/comments/topSix
Request Method:
GET
Status Code:
502 Bad Gateway
Remote Address:
[2606:4700:3030::ac43:935e]:443

admin：Request URL:
https://admin.netheart.xyz/api/users/login
Request Method:
POST
Status Code:
502 Bad Gateway
Remote Address:
127.0.0.1:7890
Referrer Policy:
strict-origin-when-cross-origin
}

我的nginx:
location ^~ /api/ {
proxy_pass http://doc.netheart.xyz:8080/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

}

server {
listen 443 ssl;
server_name admin.netheart.xyz;

    ssl_certificate    /etc/ssl/certs/admin.netheart.xyz.pem;
    ssl_certificate_key  /etc/ssl/certs/admin.netheart.xyz.key;
    ssl_session_timeout 5m;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;

   location / {
        root   /usr/local/aurora-vue/admin;
        index  index.html index.htm;
        try_files $uri $uri/ /index.html;
    }

    location ^~ /api/ {
        proxy_pass http://admin.netheart.xyz:8080/;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

}

我的 blog vue.config.js
devServer: {
chunkSizeWarningLimit: 1600,
proxy: {
'/api': {
target: 'https://www.linhaojun.top/api/',_
changeOrigin: true,
pathRewrite: {
'^/api': ''
}
}
}
},

我已经对nginx 的proxy pass 换成自己的IP抑或是域名，都不行，同样也对 admin 和blog 的vue.config.js. api target 设置为自己的域名和IP，包括添加8080 端口，也不行，

我开放的端口如下：8080，80，443，3306，5601.。9200。等也不行

Need Help!!!