SmartWeather Binding: Humidity not available anymore

OH 4.0.1 running on buster 64 bit installation on a raspi 4

Hello All,

I have installed the SmartWeather Binding for the tempest weather station.
Since some time the humidity channel is not updated anymor, it shows UNDEF.
All other channels are working perfectly, no change made on this specific channel.
Any idea what could cause the problem ?

I did several updates of OH, maybe there something went wrong?

Here my item definition:

Number:Dimensionless SmartWeatherHub_Humidity “Feuchte [%.1f %% rH]” (Group_Weatherstation)
{ channel=“weatherflowsmartweather:tempest:HB-00041084:ST-00023261:humidity” }