Circular structure Error

Development Plone 6 UI (Volto)
1

Hi, I'm running a Volto 17.15.6 site with no addons in production deployed with pm2. I get the following error in the browser:

Sorry, something went wrong with your request
Converting circular structure to JSON --> starting at object with constructor 'Object' --- property 'issuerCertificate' closes the circle

I get not messages in the nginx error log but the access file has:

"GET / HTTP/1.1" 500 584 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0"
"GET /favicon.ico HTTP/1.1" 200 15086 "https://webtide.co.za/" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0"
"GET /renderer.js.map HTTP/1.1" 500 584 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0"
"GET /installHook.js.map HTTP/1.1" 500 584 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0"

Have anyone seen this before? And where would I find the node log file?

2

I found my problem. In my nginx config I had the frontend on port 8701 and the backend on 8702. I changed the backend to port 8703 and now works!

I remember reading somewhere that by default, volto uses both port 3000 and 3001 but I cannot find anything in the manual. I was thinking of adding something here. But I presume the same issue exists when using Traefik, where would I make a note/warning in the manual for that?