suddenly can't connect to server

[metropical]

updated JFS yesterday from 10.10.7 to 10.11.3.
Connected once with no issues.
Today, can't connect at all.
Dumped 10.11.13 and reinstalled 10.10.7.
No change.
Ran Disk Utils and Onyx on MacOS 12.7.6, and restarted.
No change.

No problem connecting Emby which is on the same Mac but different port.
JFS is on 8097 where it has always been.
Checked pf's on router, still correct.

https://pastebin.com/MA5V36k0 - Log

[metropical]

deleted 10.10.7
deleted 10.11.3
Deleted config folder and started from scratch with 10.11.3.
No change.

[metropical]

Tried swapping ports for emby and JFS, so Emby is on 8097 and JFS 8096. No difference.
Port scan sees 8096 closed and 8097 open.
Tried localhost:8096 as well as 192.168.1.###:8096. Nope.
Tried a different router. Nope

No errors are seen from JellyFin