[Chromecast] setting volume for audio group results in java exception

Hi all,

I have a few google home devices in my house. using the google app I’ve grouped them together. This group is identified as a thing in openhab. Using a slider on Basic UI I tried to set the volume for this group. Tbh I don’t know if google even supports this. Anyway, once I touch the slider and set a new value the following error is written in openhab.log

Btw: I tried the same using a rule and .sendCommand() which leads more or less to the same error (just repeated a few more times).

2018-06-08 14:09:17.754 [ome.event.ItemCommandEvent] - Item 'GoogleHomeGroup' received command 39

==> /var/log/openhab2/openhab.log <==

2018-06-08 14:09:17.880 [WARN ] [su.litvak.chromecast.api.v2.Channel ] - Error while handling

org.codehaus.jackson.map.JsonMappingException: Could not resolve type id 'DEVICE_UPDATED' into a subtype of [simple type, class su.litvak.chromecast.api.v2.StandardResponse]

 at [Source: N/A; line: -1, column: -1]

	at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163) ~[207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.deser.StdDeserializationContext.unknownTypeException(StdDeserializationContext.java:273) [207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.jsontype.impl.TypeDeserializerBase._findDeserializer(TypeDeserializerBase.java:117) [207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.jsontype.impl.AsPropertyTypeDeserializer.deserializeTypedFromObject(AsPropertyTypeDeserializer.java:74) [207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.deser.AbstractDeserializer.deserializeWithType(AbstractDeserializer.java:89) [207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.deser.StdDeserializerProvider$WrappedDeserializer.deserialize(StdDeserializerProvider.java:494) [207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2695) [207:org.openhab.binding.chromecast:2.3.0]

	at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1990) [207:org.openhab.binding.chromecast:2.3.0]

	at su.litvak.chromecast.api.v2.EventListenerHolder.deliverEvent(EventListenerHolder.java:56) [207:org.openhab.binding.chromecast:2.3.0]

	at su.litvak.chromecast.api.v2.Channel.notifyListenersOfSpontaneousEvent(Channel.java:440) [207:org.openhab.binding.chromecast:2.3.0]

	at su.litvak.chromecast.api.v2.Channel.access$600(Channel.java:50) [207:org.openhab.binding.chromecast:2.3.0]

	at su.litvak.chromecast.api.v2.Channel$ReadThread.run(Channel.java:186) [207:org.openhab.binding.chromecast:2.3.0]

Please post the mentioned configuration.

item
Dimmer GoogleHomeGroup { channel="chromecast:audiogroup:f89f59b1-e945-4c66-a713-e6f1be964e2f:volume" }

sitemap
Slider item=GoogleHomeGroup

I begin to believe that setting a volume on an audio group just isn’t possible, even out of the box.

should I open an issue in github?