ERR_CONNECTION_REFUSED - Githubissues

Hi,
After log in, Nginx returns this error on the https://****.com/index URL : ERR_CONNECTION_REFUSED
Do you have an idea of the problem ? Thanks in advance.
My Nginx .conf file is:

server
{
    #listen [::]:80;
    server_name ****.com www.****.com;
    index index.php default.php index.html index.htm default.html default.htm;
    root  /usr/share/nginx/html/public/;

    #error_page   404   /404.html;

    # Deny access to PHP files in specific directory
    location ~ /(wp-content|uploads|wp-includes|images)/.*\.php$ { deny all; }

    # Don't Log the access log of robots.txt or favicon.ico
    location = /robots.txt { allow all; log_not_found off; access_log off; }
        location = /favicon.ico { allow all; log_not_found off; access_log off; }

    # security headers
    # add_header X-Frame-Options "SAMEORIGIN" always;
    # add_header X-XSS-Protection "1; mode=block" always;
    # add_header X-Content-Type-Options "nosniff" always;
    # add_header Referrer-Policy "no-referrer-when-downgrade" always;
    # add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
    # add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;

    location = / {
        rewrite ^(.*)$ /index last;
    }

    location / {
        proxy_http_version 1.1;
        proxy_set_header Connection "keep-alive";
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        if (!-e $request_filename) {
            proxy_pass http://127.0.0.1:9501;
        }
    }

    # assets, media
    location ~* \.(?:css(\.map)?|js(\.map)?|jpe?g|png|gif|ico|cur|heic|webp|tiff?|mp3|m4a|aac|ogg|midi?|wav|mp4|mov|webm|mpe?g|avi|ogv|flv|wmv)$ {
        expires 7d;
        access_log off;
    }

    # svg, fonts
    location ~* \.(?:svgz?|ttf|ttc|otf|eot|woff2?)$ {
        add_header Access-Control-Allow-Origin "*";
        expires 7d;
        access_log off;
    }

    # ACME-challenge
    location ~ /.well-known {
        allow all;
    }

    # . files
    location ~ /\.(?!well-known) {
        deny all;
    }

    access_log  /usr/share/nginx/html/bht.is.log;

    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/bhtorrents.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/bhtorrents.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}```
Rhilip / RidPT

ERR_CONNECTION_REFUSED #52
