ValueError sensor.buienalarm_next_rain_forecast_min

[Sarnog]

Describe the bug

Any errors

Logger: homeassistant
Source: components/sensor/__init__.py:585
First occurred: 17:21:09 (1 occurrences)
Last logged: 17:21:09

Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 581, in state
    numerical_value = int(value)
                      ^^^^^^^^^^
ValueError: invalid literal for int() with base 10: 'unknown'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/template_entity.py", line 380, in _async_template_startup
    result_info.async_refresh()
  File "/usr/src/homeassistant/homeassistant/helpers/event.py", line 974, in async_refresh
    self._refresh(None)
  File "/usr/src/homeassistant/homeassistant/helpers/event.py", line 1154, in _refresh
    self.hass.async_run_hass_job(self._job, event, updates)
  File "/usr/src/homeassistant/homeassistant/core.py", line 618, in async_run_hass_job
    hassjob.target(*args)
  File "/usr/src/homeassistant/homeassistant/helpers/template_entity.py", line 349, in _handle_results
    self.async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 590, in async_write_ha_state
    self._async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 654, in _async_write_ha_state
    state = self._stringify_state(available)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 596, in _stringify_state
    if (state := self.state) is None:
                 ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 585, in state
    raise ValueError(
ValueError: Sensor sensor.buienalarm_next_rain_forecast_min has device class 'None', state class 'None' unit 'min' and suggested precision 'None' thus indicating it has a numeric value; however, it has the non-numeric value: 'unknown' (<class 'str'>)

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