Nginx can not proxy HolyUnblocker

[R-Josef]

I want to use nginx for proxy because I have other websites. I tried many configurations but none of them worked:

server {
    listen 80;
    server_name holyub.xxxxx.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    ssl_certificate /root/.acme.sh/*.xxxxx.com/fullchain.cer;
    ssl_certificate_key /root/.acme.sh/*.xxxxx.com/*.xxxxx.com.key;
    server_name holyub.xxxxx.com;

    index index.html;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host  $http_host;
        proxy_set_header X-Nginx-Proxy true;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
    }
}

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

server {
    listen 80;
    server_name holyub.xxxxx.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    ssl_certificate /root/.acme.sh/*.xxxxx.com/fullchain.cer;
    ssl_certificate_key /root/.acme.sh/*.xxxxx.com/*.xxxxx.com.key;
    server_name holyub.xxxxx.com;

    index index.html;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }
}

None of the above configurations work, what should I do?

[QuiteAFancyEmerald]

It should work lol

Remove this line: index index.html; and use proxy_set_header Connection 'upgrade';

So like (as an example):

server {
    listen 80;
    server_name holyub.xxxxx.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    ssl_certificate /root/.acme.sh/*.xxxxx.com/fullchain.cer;
    ssl_certificate_key /root/.acme.sh/*.xxxxx.com/*.xxxxx.com.key;
    server_name holyub.xxxxx.com;

    location / {
        proxy_pass http://localhost:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
    }
}

[R-Josef]

Thanks for your reply, after I tried the configuration you gave and it didn't work, I realized that the problem was not with nginx, after many tests, I finally found out where the problem was: our government has banned ips in some areas and hijacked the traffic of these ips. So when I enable ssl and visit this website, the browser will return ERR_CONNECTION_RESET, it can be seen how important this proxy program is to people like me, thank you for your work.
Now I changed my VPS and it is normal.

[QuiteAFancyEmerald]

Oh okay. Sorry about that though.