Hi,
Just did a fresh install of hass.io on my Rpi3 model B. Looking at the log I get a bunch of errors.
Error in database connectivity: (sqlite3.OperationalError) no such table: events [SQL: 'INSERT INTO events (event_type, event_data, origin, time_fired, created) VALUES (?, ?, ?, ?, ?)'] [parameters: ('system_log_event', '{"timestamp": 1519762505.65503, "level": "ERROR", "message": "Error in database connectivity: (sqlite3.OperationalError) no such table: events
I am not sure if it is related to unsuccesfull installtions of DuckDNS which kept failing in the end.