SmartThings Integration Webhook Error

I have Smartthings integrated with HA 0.102.2 via Webhook vs the Nabu Casa Cloud. I original had the SmartThings hub (latest generation) integrated with no devices. I added my first device and nothing came across even though the “Enable newly added entities” selector is on.

I deleted my Smartthings integration generated a new Smartthings token and configured the integration again, the devices controlled by Smarthings appeared in the integration. I have sense added more lights and had to go through the same process every time I add new devices.

I am getting the following Webhook error when the new devices are added and appears to happen when attempting to update HA.

Appreciate any help.

John

Very old topic but I ended up here trying to find solution, found only question. Now that I have it fixed, back here and thought I’d post what fixed it for me if someone with the same problem finds this topic in the future.

When I had to reinstall Smartthings integration and generate new token etc, I removed the integration from the ui then removed .storage/smartthings and restarted homeassistant, added integration back and all worked.

If you are using Cloudflare make sure TLS 1.3 is not enabled, this fixed my issue.
Found here:

Fast forward 2 years…Still the same Webhook errors. I’m using Cloudflared integration. Has anyone ever truly figured out how to make this work ?