Hi,
Today appear an blocking issue on my HA setup.
It was not possible to get access to the lovelace dashboard : unable to connect.
I was running HA Core with docker on a Synology NAS, version 2022.8.
It appeared thin morning and this evening I tried to restart, with no better behaviour.
I tried updating to 2022.9.1, but the result it the same 
2022-09-10 21:17:50.202 ERROR (MainThread) [homeassistant.components.automation] Blueprint Low battery level detection & notification for all battery sensors generated invalid automation with inputs OrderedDict([('actions', [OrderedDict([('if', [OrderedDict([('condition', 'numeric_state'), ('entity_id', 'automation.low_battery_level_detection_notification_for_all_battery_sensors_v2'), ('above', '1')])]), ('then', [OrderedDict()])])])]): Unable to determine action @ data['action'][0]['default'][0]['then'][0]. Got None
2022-09-10 21:17:50.571 ERROR (MainThread) [homeassistant.util.logging] Exception in _async_process_device_data when dispatching 'device_tracker_connected_device_registered': ({'ip': '', 'mac': 'xx:cc:vv:bb:nn:kk', 'host_name': None},)
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/components/dhcp/__init__.py", line 373, in _async_process_device_data
self.async_process_client(ip_address, hostname, _format_mac(mac_address))
File "/usr/src/homeassistant/homeassistant/components/dhcp/__init__.py", line 157, in async_process_client
made_ip_address = make_ip_address(ip_address)
File "/usr/local/lib/python3.10/ipaddress.py", line 54, in ip_address
raise ValueError(f'{address!r} does not appear to be an IPv4 or IPv6 address')
ValueError: '' does not appear to be an IPv4 or IPv6 address
2022-09-10 21:17:50.757 ERROR (MainThread) [homeassistant.helpers.event] Error while processing event <Event state_changed[L]: entity_id=device_tracker.mi_pad_10, old_state=None, new_state=<state device_tracker.mi_pad_10=home; source_type=router, ip=, mac=xx:cc:vv:bb:nn:kk, first_seen=2022-09-09T01:56:40Z, friendly_name=MI-PAD-10 @ 2022-09-10T21:17:50.724436+02:00>> for domain device_tracker
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/event.py", line 419, in _async_dispatch_domain_event
hass.async_run_hass_job(job, event)
File "/usr/src/homeassistant/homeassistant/core.py", line 567, in async_run_hass_job
hassjob.target(*args)
File "/usr/src/homeassistant/homeassistant/components/dhcp/__init__.py", line 315, in _async_process_device_event
self._async_process_device_state(event.data["new_state"])
File "/usr/src/homeassistant/homeassistant/components/dhcp/__init__.py", line 335, in _async_process_device_state
self.async_process_client(ip_address, hostname, _format_mac(mac_address))
File "/usr/src/homeassistant/homeassistant/components/dhcp/__init__.py", line 157, in async_process_client
made_ip_address = make_ip_address(ip_address)
File "/usr/local/lib/python3.10/ipaddress.py", line 54, in ip_address
raise ValueError(f'{address!r} does not appear to be an IPv4 or IPv6 address')
ValueError: '' does not appear to be an IPv4 or IPv6 address
What is happening and what should I do now ?