I have a tradfri gateway configured. After I reboot HASS (0.99.2 on hassbian) the connection with trafdri gateway is lost. At the Integration menu the tradfri connection is there but not active. After removing and adding it again with ip and code all is working until I reboot HASS.
2019-10-07 16:03:27 ERROR (MainThread) [coap] Exception CancelledError() can not be represented as errno, setting -1.
2019-10-07 16:03:27 ERROR (MainThread) [homeassistant.components.tradfri] Tradfri setup failed.
After doing a bit of searching, I’m not sure this is a Home Assistant issue, it seems that a recent firmware update for the Tradfri gateway has caused a few issues including homekit functionality, I’ve also noticed that the app on my Android phone sometimes can’t find the gateway unless I reboot it (the gateway). It’s also unusual that there aren’t a lot of people reporting the same issue on here. Perhaps we’re the unlucky ones.