Here's one I've never seen before. Came home, automations were all dead (room lights, etc). Hub UI is accessible - I was able to open the Hub-A-Dashery app - but navigating to logs gets me a 500.
Rebooted the hub, seems back to normal. This is what I found in the logs :
No pattern jumps at me in the list of affected devices.
@support_team let me know if I should update to the latest or if you'd like to look at the hub first (sending hub ID in PM next)