[Urgent] Ghost server throwing 502 Bad Gateway

Hi everyone!

I created a droplet using Ghost image from marketplace and the server started throwing 502 Bad Gateway randomly

I had made no changes in the server.

Domain name: https://businessbrewery.io/

I tried finding the issue using ‘ghost doctor’ but everything seems fine over there as well

✔ Checking system Node.js version - found v16.19.1
✔ Checking logged in user
✔ Ensuring user is not logged in as ghost user
✔ Checking if logged in user is directory owner
✔ Checking current folder permissions
✔ Checking system compatibility
✔ Checking for a MySQL installation
+ sudo systemctl is-active ghost_businessbrewery-io
Instance is currently running
ℹ Validating config [skipped]
✔ Checking folder permissions
✔ Checking file permissions
✔ Checking content folder ownership
✔ Checking memory availability
✔ Checking binary dependencies
✔ Checking free space
✔ Checking systemd unit file
✔ Checking systemd node version - found v16.19.1

sudo nginx -t gives:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

I ran sudo tail -F /var/log/nginx/error.log It gives:

2023/02/25 16:29:50 [error] 838#838: *229 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.150.249, server: businessbrewery.io, request: "GET /item/136 HTTP/1.1", upstream: "http://127.0.0.1:2368/item/136", host: "www.zeituun.com", referrer: "https://www.zeituun.com/category/6"
2023/02/25 16:32:13 [error] 838#838: *231 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.136.199, server: businessbrewery.io, request: "GET /item/98 HTTP/1.1", upstream: "http://127.0.0.1:2368/item/98", host: "zeituun.com", referrer: "https://zeituun.com/item/112"
2023/02/25 16:46:53 [error] 838#838: *235 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.166.212, server: businessbrewery.io, request: "GET /item/35 HTTP/1.1", upstream: "http://127.0.0.1:2368/item/35", host: "zeituun.com", referrer: "https://zeituun.com/item/222"
2023/02/25 16:47:51 [error] 838#838: *237 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET / HTTP/2.0", upstream: "http://127.0.0.1:2368/", host: "businessbrewery.io"
2023/02/25 16:47:51 [error] 838#838: *237 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET /favicon.ico HTTP/2.0", upstream: "http://127.0.0.1:2368/favicon.ico", host: "businessbrewery.io", referrer: "https://businessbrewery.io/"
2023/02/25 16:49:52 [error] 838#838: *237 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET / HTTP/2.0", upstream: "http://127.0.0.1:2368/", host: "businessbrewery.io", referrer: "https://www.digitalocean.com/"
2023/02/25 16:49:52 [error] 838#838: *237 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET /favicon.ico HTTP/2.0", upstream: "http://127.0.0.1:2368/favicon.ico", host: "businessbrewery.io", referrer: "https://businessbrewery.io/"
2023/02/25 16:50:59 [error] 838#838: *242 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.135.7, server: businessbrewery.io, request: "GET /term_and_conditions HTTP/1.1", upstream: "http://127.0.0.1:2368/term_and_conditions", host: "zeituun.com", referrer: "https://zeituun.com/item/126"
2023/02/25 16:51:29 [error] 838#838: *237 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET / HTTP/2.0", upstream: "http://127.0.0.1:2368/", host: "businessbrewery.io", referrer: "https://www.digitalocean.com/"
2023/02/25 16:51:29 [error] 838#838: *237 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET /favicon.ico HTTP/2.0", upstream: "http://127.0.0.1:2368/favicon.ico", host: "businessbrewery.io", referrer: "https://businessbrewery.io/"
2023/02/25 16:53:16 [error] 838#838: *246 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.151.174, server: businessbrewery.io, request: "GET /item/13 HTTP/1.1", upstream: "http://127.0.0.1:2368/item/13", host: "zeituun.com", referrer: "https://zeituun.com/item/4"
2023/02/25 16:53:38 [error] 838#838: *248 connect() failed (111: Unknown error) while connecting to upstream, client: 64.233.172.181, server: businessbrewery.io, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:2368/", host: "businessbrewery.io"
2023/02/25 16:54:49 [error] 838#838: *252 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:2368/", host: "206.189.130.138"
2023/02/25 16:54:49 [error] 838#838: *252 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:2368/favicon.ico", host: "206.189.130.138", referrer: "http://206.189.130.138/"
2023/02/25 16:57:11 [error] 838#838: *255 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.157.4, server: businessbrewery.io, request: "GET /index.php/item/158 HTTP/1.1", upstream: "http://127.0.0.1:2368/index.php/item/158", host: "zeituun.com", referrer: "https://zeituun.com/index.php/item/255"
2023/02/25 16:58:33 [error] 838#838: *261 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:2368/", host: "www.zeituun.com"
2023/02/25 16:58:34 [error] 838#838: *261 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:2368/favicon.ico", host: "www.zeituun.com", referrer: "http://www.zeituun.com/"
2023/02/25 16:59:35 [error] 838#838: *266 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET / HTTP/2.0", upstream: "http://127.0.0.1:2368/", host: "www.zeituun.com", referrer: "https://www.google.com/"
2023/02/25 16:59:35 [error] 838#838: *266 connect() failed (111: Unknown error) while connecting to upstream, client: 171.76.87.233, server: businessbrewery.io, request: "GET /favicon.ico HTTP/2.0", upstream: "http://127.0.0.1:2368/favicon.ico", host: "www.zeituun.com", referrer: "https://www.zeituun.com/"
2023/02/25 16:59:58 [error] 838#838: *269 connect() failed (111: Unknown error) while connecting to upstream, client: 54.208.201.249, server: businessbrewery.io, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:2368/", host: "www.zeituun.com"
2023/02/25 17:00:06 [error] 838#838: *271 connect() failed (111: Unknown error) while connecting to upstream, client: 114.119.152.161, server: businessbrewery.io, request: "GET /index.php/item/137 HTTP/1.1", upstream: "http://127.0.0.1:2368/index.php/item/137", host: "zeituun.com", referrer: "https://zeituun.com/index.php/item/135"

I don’t know where this zeituun.com came from

Can someone help with this issue, please?