Problem deserializing the XGBoostModel

[nmicra]

I've successfully serialized the XGBoostModel using the Jackson ObjectMapper, but when I've tried to deserialize it got the below exception.

** Any recommendations ?**

Exception when deserializing the org.tribuo.common.xgboost.XGBoostModel

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `org.tribuo.common.xgboost.XGBoostModel` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (StringReader); line: 1, column: 2]
	at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67) ~[jackson-databind-2.13.4.jar:2.13.4]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	*__checkpoint ⇢ Handler com.github.nmicra.marketresearch.controller.PredictController#predictWithModelTimeSeriesForLabel(String, String, int, Continuation) [DispatcherHandler]
	*__checkpoint ⇢ HTTP POST "/predict/timeSeries/withModel/ARKK/daily/10" [ExceptionHandlingWebHandler]
Original Stack Trace:
		at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1904) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1349) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1415) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:352) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:185) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4674) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3629) ~[jackson-databind-2.13.4.jar:2.13.4]
		at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3612) ~[jackson-databind-2.13.4.jar:2.13.4]

[Craigacp]

Tribuo doesn't support serializing models to JSON. The serialization options in v4.3 are java.io.Serializable and protobuf. You could convert either of them into a byte array and base64 encode that if you want something which can travel safety in a JSON object, but it might be quite a large string.