This is yet another super quick post.
If you install Homeassistant on Raspbian Buster using the step by step description at home-assistant.io, the web gui does not start. Your browser is hanging, and there is no good error message. In the pip3 part of the installation, the web gui is skipped for some reason. To resolve this, just install it manually with
pip3, and you are good to go. If you read this way into the future, this is hopefully resolved already and this post is irrelevant.
- You need to manually install home-assistant-frontend
sudo -H -u homeassistant -s cd /srv/homeassistant/ source bin/activate (homeassistant) homeassistant@hass-r001wue:/srv/homeassistant $ pip3 install home-assistant-frontend