getting the same error. didn’t really find a solution here…
Number:Length OneCallAPIweatherandforecast_ForecastHours01_Visibility "Visibility" ["Point"] { channel="openweathermap:onecall:bridge:local:forecastHours01#visibility", unit="km" }
still brings the error:
Failed to update item 'OneCallAPIweatherandforecast_ForecastHours01_Visibility' because '87 %' could not be converted to the item unit 'km'
previously unit wasn’t configured at all.