Updated core and now <ip>:8123 doesn't load

I didn’t bother noting down versions, however I saw update available for core and performed an update.
Dashboard doesn’t load after that.
I checked web console for firefox and it simply says connection can’t establish.
Unchecked lastError value: Error: Could not establish connection. Receiving end does not exist.
I can ping the IP and I can browse Samba share as well.

Can this still be salvaged? Or I can re-install and restore snapshot.

Thanks

If the Samba share contains your HA config folder, there will be the HA log file (home-assistant.log). Have a look what it says in there. That might give some indication what is going on.

Oh nice:
However nothing really latest

2021-04-22 11:30:53 ERROR (MainThread) [homeassistant.components.zwave_js] Failed to connect: Cannot connect to host a0d7b954-zwavejs2mqtt:3000 ssl:default [Connect call failed ('172.30.33.0', 3000)]

2021-04-22 11:30:53 WARNING (MainThread) [homeassistant.config_entries] Config entry 'Z-Wave JS' for zwave_js integration not ready yet: Cannot connect to host a0d7b954-zwavejs2mqtt:3000 ssl:default [Connect call failed ('172.30.33.0', 3000)]; Retrying in background

Those are about 3 hrs old messages

Some more info:
Looks like even containers running on HASS seems to be up, for e.g. :3000 has rest980 running and :3001 has php_nginx running. I can access both of them

3 days later: After a reboot HASS seems to show up again at :8123, however things are not necessarily correct.
There is nothing wrong in Supervisor → System → log
But HACS seems to permanently say HACS is starting up
And I don’t see maps icon anymore, also theme is reset.

config/home-assistant.log has following entry

2021-04-25 13:54:58 WARNING (MainThread) [homeassistant.loader] You are using a custom integration hacs which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2021-04-25 13:56:49 ERROR (MainThread) [custom_components.hacs] <Integration hacs/integration> Could not read manifest.json [encoding without a string argument]
2021-04-25 13:56:51 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/discovery.py", line 158, in async_load_platform
    assert hass_config, "You need to pass in the real hass config"
AssertionError: You need to pass in the real hass config
2021-04-25 13:56:57 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/config/custom_components/hacs/hacsbase/hacs.py", line 140, in startup_tasks
    await self.handle_critical_repositories()
  File "/config/custom_components/hacs/hacsbase/hacs.py", line 195, in handle_critical_repositories
    critical = json.loads(critical.content)
AttributeError: 'list' object has no attribute 'content'

Do I need to update something related to HACS ?

Looks like it was theme issue?
Oh well now I’ve SSD in my setup, just changed configuration.yaml to comment out theme and it worked