Haproxy nextcloud and docker connectability issue with fqdn

Hello team,
I recently set up a truenas scale server that I have set up with a custom configuration as is outlined here. TrueNAS Scale Native Docker & VM access to host [Guide] - #74 by firebobble . This has worked really well but I cannot access nextcloud from the fqdn. Can someone help me troubleshoot what the issue is? I get a 503 Service Unavailable.

No server is available to handle this request. when I try and access the page which mean the forwarding is working as it is supposed to. This implies the issue is with haproxy which I have set up in pfsense which is running reverse proxies to many of lan services without issue. The forwarding happens fine like with my emby server.

In the stats section of the haProxy page in pfsense I see that there ssl error

I set up certificates with lets encrypt etc but I must have messed something up because I am not sure what is going on? Anyone have some ideas or perhaps steps I can take to figure out where the issue is and how to fix it?! Thanks friends!