Home assistant not work web ui

Hello, I have a problem with the home assistant. Everything worked fine for 2 weeks. Today I receive aqara cube, I added it to mi home. I did a home assistant restart and nothing worked all fell. Can’t reach Web Interface. Everything worked well before. I did not change anything in the configuration file.

Here is home-assistant.log

2018-08-24 16:03:14 WARNING (MainThread) [homeassistant.components.http] You have been advised to set http.api_password.
2018-08-24 16:03:17 WARNING (Recorder) [homeassistant.components.recorder] Ended unfinished session (id=111 from 2018-08-24 16:58:16.569422)
2018-08-24 16:03:19 ERROR (Thread-16) [pychromecast.socket_client] Failed to connect, retrying in 5.0s

Other user reported that failed to connect chromecast during the system startup will cause problem.