Hue emulation log entries for [WARN ] [ueemulation.internal.upnp.UpnpServer]

I just installed the Hue emulations and start setting up the items accordingly.
Now I am realizing this log entry approx. all 2 minutes - What is this, maybe a config error?

2020-12-01 21:58:32.396 [WARN ] [ueemulation.internal.upnp.UpnpServer] - Could not send UPNP response: Cannot assign requested address (sendto failed)