Bad Gateway 502, in MacOS

[weilies.chok]

What is the name of the domain?

https://companion.nextnovas.com

What is the error number?

502

What is the error message?

Bad Gateway 502

What is the issue you’re encountering

Unable to visit to my web app

What steps have you taken to resolve the issue?

Multiple tries in Youtube tutorials, checked cloudflare community

What are the steps to reproduce the issue?

Visit the website will hit the error

[weilies.chok]

attached my error log

[weilies.chok]

I can’t believe this command resolve my issue
weilieschok@Weiliess-Mac-mini ~ % docker run --rm curlimages/curl:latest http://host.docker.internal:3000

it installed the package as it’s not available, then able to CURL in my macOS, then the site is now accessible