Hi, im getting the same error. this is my config.json:

{
    "url": "http://foro.az-rp.com:4567",
    "secret": "93dbf148-f817-47f9-996c-4f87672d9787",
    "database": "redis",
    "redis": {
        "host": "127.0.0.1",
        "port": "6379",
        "password": "",
        "database": "0"
    },
    "port": "4567"
}

and my nginx config:

  location / {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;
    proxy_pass http://127.0.0.1:4567;
    proxy_redirect off;
    # Socket.IO Support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
  }