Connect() failed (111: Unknown error) while connecting to upstream

I am seeing this error in my ngnix logs

2023/09/05 08:51:46 [error] 4217#4217: *1 connect() failed (111: Unknown error) while connecting to upstream, client: 154.80.49.62, server: 139.59.233.210, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8000/favicon.ico", host: "139.59.233.210", referrer: "http://139.59.233.210/"

And also when i put my server ip in the browser, this is what I am seeing