Error while processing event StatisticsTask(start=datetime.datetime(2026, 1, 8, 14, 40, tzinfo=datetime.timezone.utc), fire_events=True)

Hi there, i had the follow Error today.
At the Errortime my recorder don’t work.
What can i do and what is the matter?

I have no idea. Thanks for your help.

Logger: homeassistant.helpers.recorder
Quelle: helpers/recorder.py:95
Erstmals aufgetreten: 12:23:43 (46 Vorkommnisse)
Zuletzt protokolliert: 16:05:10

Error executing query
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/recorder.py", line 95, in session_scope
    yield session
  File "/usr/src/homeassistant/homeassistant/components/recorder/statistics.py", line 623, in compile_missing_statistics
    modified_statistic_ids = _compile_statistics(
        instance, session, start, end >= last_period
    )
  File "/usr/src/homeassistant/homeassistant/components/recorder/statistics.py", line 707, in _compile_statistics
    compiled: PlatformCompiledStatistics = platform_compile_statistics(
                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        instance.hass, session, start, end
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/components/sensor/recorder.py", line 576, in compile_statistics
    unit_class, statistics_unit, valid_float_states = _normalize_states(
                                                      ~~~~~~~~~~~~~~~~~^
        hass,
        ^^^^^
    ...<2 lines>...
        entity_id,
        ^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/components/sensor/recorder.py", line 305, in _normalize_states
    if not (converter := _get_unit_converter(unit_class)):
                         ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/recorder.py", line 270, in _get_unit_converter
    return statistics.UNIT_CLASS_TO_UNIT_CONVERTER[unit_class]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
KeyError: 'frequenz'

And at the same time i had this Error too.

Logger: homeassistant.helpers.recorder
Quelle: helpers/recorder.py:95
Erstmals aufgetreten: 12:23:43 (46 Vorkommnisse)
Zuletzt protokolliert: 16:05:10

Error executing query
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/recorder.py", line 95, in session_scope
    yield session
  File "/usr/src/homeassistant/homeassistant/components/recorder/statistics.py", line 623, in compile_missing_statistics
    modified_statistic_ids = _compile_statistics(
        instance, session, start, end >= last_period
    )
  File "/usr/src/homeassistant/homeassistant/components/recorder/statistics.py", line 707, in _compile_statistics
    compiled: PlatformCompiledStatistics = platform_compile_statistics(
                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        instance.hass, session, start, end
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/components/sensor/recorder.py", line 576, in compile_statistics
    unit_class, statistics_unit, valid_float_states = _normalize_states(
                                                      ~~~~~~~~~~~~~~~~~^
        hass,
        ^^^^^
    ...<2 lines>...
        entity_id,
        ^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/components/sensor/recorder.py", line 305, in _normalize_states
    if not (converter := _get_unit_converter(unit_class)):
                         ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/recorder.py", line 270, in _get_unit_converter
    return statistics.UNIT_CLASS_TO_UNIT_CONVERTER[unit_class]
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
KeyError: 'frequenz'