Local Webhooks quit working, and new ones through Nabu Casa don't work at all...?

I have a trigger in an automation that’s setup as a webhook. I’ve set that webhook as not local only, and when I try to access the resulting nabu casa URL that’s given to me, I get “This site can’t be reached.”

My config has api: in it, and the http: line as well. My one any only local webhook ID that I had two weeks ago used to work, but now it doesn’t.

What changed and how do I get them to actually work now?

Now my browser is downloading a file if I try to access http://<localhost>:8123/api/webhook/<id>.

I have same problem, have you figured out?
Log say:
2023-08-27 22:28:24.792 WARNING (MainThread) [homeassistant.components.webhook] Received remote request for local webhook testid
2023-08-27 22:33:19.861 WARNING (MainThread) [homeassistant.components.webhook] Received remote request for local webhook testid
2023-08-27 22:34:00.610 WARNING (MainThread) [homeassistant.components.webhook] Received remote request for local webhook testid

but no action run, not even traces