Weatherflow integration: "Config flow could not be loaded: Unknown error"
I'm trying to set up Tempest weather station integration in HomeAssistant, using the non-cloud service. All I get is the above error.
HomeAssistant is a brand new install of 1.8.15 (TrueNAS app version 2026.4.0) of all vanilla settings. No imports of any settings or devices, out of the box with not even as much as a theming change. It's running in a Docker container on TrueNAS.
One suggestion I kept seeing to resolve this problem was having the Tempest on the same subnet as HomeAssistant, so I moved it from my IoT subnet to the subnet I use for everything else. Nothing changed.
Mosquitto is already installed and running in another container. I've seen some suggestions that not having an MQTT broker installed was the problem. Still can't install the WeatherFlow integration.
All I'm finding now is hundreds of other clueless idiots like myself "me too"ing on hundreds of other "how do I fix it" posts.
I can't be sure if my problem is TrueNAS, HomeAssistant, Docker, Tempest, or something else. Given other apps on TrueNAS seem to work fine and the problem occurs when attempting to set up an HA integration, I guess this is a good place to start.