How can I set up a nginx reverse proxy to access a published app?

[quaggalinux]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I have already published an app and this app's public access URL for this application is below. How can I set up a nginx reverse proxy to access this published app? I just need the nginx config example.

http://192.168.199.81/chat/lJ2bw04iu7JMDVVU

Thank you so much!

2. Additional context or comments

No response

[quaggalinux]

I try below config but it does not work.

/etc/nginx/sites-available/default

location / {
    proxy_pass       http://192.168.199.81/chat/lJ2bw04iu7JMDVVU;
    proxy_redirect             off;
    proxy_http_version         1.1;
    proxy_set_header Host      $host;
    proxy_set_header X-Real-IP $remote_addr; 
    proxy_set_header  X-Forwarded-For $remote_addr; 
    }
}