Hello,
I’m trying to create a very simple webhook, but without success.
I’ve checked the various points, but I can’t find the issue — and if it’s a problem between the chair and the keyboard, I can’t solve it on my own 
I’m on Nabu Casa, so everything is almost automatic:
I created my automation with the webhook trigger.
I unchecked “only accessible from the local network.”
I kept only “POST” and “PUT” or “POST” alone in the config (but I also tried all the other combinations: GET, PUT).
I do have an action following the trigger.
I did enable the webhook in Settings → Home Assistant Cloud → Webhook.
I’m retrieving the link directly from the automation; the link is already formatted with the Nabu Casa URL and the webhook ID:
https://xxxxxxx.ui.nabu.casa/api/webhook/-iOZK-RDhny0xKKSjWiK18F_B
I systematically get an HTTP 405 error.
I also tried the URL shown in the Home Assistant Cloud section (in Settings):
https://hooks.nabu.casa/gAAAAABoyxxxxxxxxxxx
and there I get an “invalid response” error.
I tried on both Chrome and Edge.
My Nabu Casa itself works perfectly; I have no access problems and everything is correctly enabled in the config.
Thanks in advance for any help!
Chrisbati