openHAB - undef number/string

[derzico]

Hey all,

I have a warning from the openHAB adapter on all my objects.

openhab.0
2022-12-02 21:46:21.094	warn	oh2iob - Unknown type: undef
openhab.0
2022-12-02 21:47:21.442	info	State value to set for "openhab.0.items.WerkstattWechselrichterSO_P2Power" has to be type "number" but received type "string"

Specifically, it is Kostal inverter items from Kostal binding, the items are set to "undef" by openHAB after it is dark and thus no more power is brought from the PV.
Does anyone else have the same problem?

Thank you very much.