Jellyfin can't access SSL certificate

[sebbyd05]

Oh I see, I have Jellyfin running on Ubuntu 22.04.3. I used the basic nginx config, but when I go to the domain it redirects me to subdomain.domain.com/web and gives me a 502 error. I assumed it was because I needed to enable SSL in the settings panel and that asked for the certificate. If that doesn't need to be turned on then do you have any other ideas as to what could be causing my issue? If it helps to know I'm using Cloudflare as my DNS provider but turning off the proxy doesn't seem to fix anything.

Thanks!