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Failure in deserializing CreateDeploymentResponse due to null value for guid in previous_droplet key #1231

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#1233
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Failure in deserializing CreateDeploymentResponse due to null value for guid in previous_droplet key#1231
#1233
@kvmw

Description

@kvmw
kvmw
opened on Jun 18, 2024

This issue is pretty much the same as issue 1024 which has been closed by pull-request 1137 but the fix is not enough. The PR is just making the relationship optional which is not enough. Because the object (previous_droplet) itself is not null but the its id is.

The first CreateDeploymentResponse payload contains previous_droplet but with null value for guid.
Sample response payload:

 {
  "guid": "dc9bc8f8-3cd1-4bee-85ec-bae9debe06bc",
  "created_at": "2024-05-24T17:52:47Z",
  "updated_at": "2024-05-24T17:52:47Z",
  "status": {
    "value": "FINALIZED",
    "reason": "DEPLOYED",
    "details": {
      "last_successful_healthcheck": "2024-05-24T17:52:47Z"
    }
  },
  "strategy": "rolling",
  "droplet": {
    "guid": "ed2556fb-bfc0-4ffb-9993-1dbf7422ed29"
  },
  "previous_droplet": {
    "guid": null
  } 
  // omitted
}

Here is the stacktrace of error:

Error has been observed at the following site(s):
	*__checkpoint() ⇢ at org.cloudfoundry.reactor.client.v3.deployments.ReactorDeploymentsV3.create(ReactorDeploymentsV3.java:61)
Original Stack Trace:
		at org.cloudfoundry.reactor.util.JsonCodec.lambda$decode$0(JsonCodec.java:46) ~[cloudfoundry-client-reactor-5.10.0.RELEASE.jar!/:na]
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:106) [reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:126) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:224) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onNext(FluxDoFinally.java:113) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxHandleFuseable$HandleFuseableSubscriber.onNext(FluxHandleFuseable.java:191) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1839) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onComplete(MonoCollectList.java:129) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxPeek$PeekSubscriber.onComplete(FluxPeek.java:260) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144) [reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onComplete(FluxDoFinally.java:128) ~[reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144) [reactor-core-3.4.30.jar!/:3.4.30]
		at reactor.netty.channel.FluxReceive.onInboundComplete(FluxReceive.java:413) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
		at reactor.netty.channel.ChannelOperations.onInboundComplete(ChannelOperations.java:424) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
		at reactor.netty.channel.ChannelOperations.terminate(ChannelOperations.java:478) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
		at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:712) ~[reactor-netty-http-1.0.33.jar!/:1.0.33]
		at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:113) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1383) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1246) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1295) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:529) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.94.Final.jar!/:4.1.94.Final]
		at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.94.Final.jar!/:4.1.94.Final]
		at java.lang.Thread.run(Thread.java:750) ~[na:1.8.0_372]
Caused by: com.fasterxml.jackson.databind.exc.ValueInstantiationException: Cannot construct instance of `org.cloudfoundry.client.v3.Relationship`, problem: Cannot build Relationship, some of required attributes are not set [id]
 at [Source: (byte[])"{
  "guid": "dc9bc8f8-3cd1-4bee-85ec-bae9debe06bc",
  "created_at": "2024-05-24T17:52:47Z",
  "updated_at": "2024-05-24T17:52:47Z",
  "status": {
    "value": "FINALIZED",
    "reason": "DEPLOYED",
    "details": {
      "last_successful_healthcheck": "2024-05-24T17:52:47Z"
    }
  },
  "strategy": "rolling",
  "droplet": {
    "guid": "ed2556fb-bfc0-4ffb-9993-1dbf7422ed29"
  },
  "previous_droplet": {
    "guid": null
  },
  "new_processes": [

  ],
  "revision": {
    "guid": "0c7fec45-b355-44"[truncated 503 bytes]; line: 18, column: 3] (through reference chain: org.cloudfoundry.client.v3.deployments.CreateDeploymentResponse$Json["previous_droplet"])
	at com.fasterxml.jackson.databind.exc.ValueInstantiationException.from(ValueInstantiationException.java:47) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.DeserializationContext.instantiationException(DeserializationContext.java:2047) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.wrapAsJsonMappingException(StdValueInstantiator.java:587) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.rewrapCtorProblem(StdValueInstantiator.java:610) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator._createUsingDelegate(StdValueInstantiator.java:647) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createUsingDelegate(StdValueInstantiator.java:306) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1397) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:352) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:185) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:314) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:215) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:187) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1398) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:352) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:185) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4674) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3690) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at org.cloudfoundry.reactor.util.JsonCodec.lambda$decode$0(JsonCodec.java:44) ~[cloudfoundry-client-reactor-5.10.0.RELEASE.jar!/:na]
	at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:106) [reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:126) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onNext(FluxMap.java:224) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onNext(FluxDoFinally.java:113) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxHandleFuseable$HandleFuseableSubscriber.onNext(FluxHandleFuseable.java:191) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1839) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onComplete(MonoCollectList.java:129) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxPeek$PeekSubscriber.onComplete(FluxPeek.java:260) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144) [reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onComplete(FluxDoFinally.java:128) ~[reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144) [reactor-core-3.4.30.jar!/:3.4.30]
	at reactor.netty.channel.FluxReceive.onInboundComplete(FluxReceive.java:413) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
	at reactor.netty.channel.ChannelOperations.onInboundComplete(ChannelOperations.java:424) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
	at reactor.netty.channel.ChannelOperations.terminate(ChannelOperations.java:478) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
	at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:712) ~[reactor-netty-http-1.0.33.jar!/:1.0.33]
	at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:113) ~[reactor-netty-core-1.0.33.jar!/:1.0.33]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:280) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1383) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1246) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1295) ~[netty-handler-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:529) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290) ~[netty-codec-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) ~[netty-transport-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.94.Final.jar!/:4.1.94.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.94.Final.jar!/:4.1.94.Final]
	at java.lang.Thread.run(Thread.java:750) ~[na:1.8.0_372]
Caused by: java.lang.IllegalStateException: Cannot build Relationship, some of required attributes are not set [id]
	at org.cloudfoundry.client.v3.Relationship$Builder.build(Relationship.java:175) ~[cloudfoundry-client-5.10.0.RELEASE.jar!/:na]
	at org.cloudfoundry.client.v3.Relationship.fromJson(Relationship.java:101) ~[cloudfoundry-client-5.10.0.RELEASE.jar!/:na]
	at sun.reflect.GeneratedMethodAccessor234.invoke(Unknown Source) ~[na:na]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_372]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_372]
	at com.fasterxml.jackson.databind.introspect.AnnotatedMethod.call1(AnnotatedMethod.java:109) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator._createUsingDelegate(StdValueInstantiator.java:631) ~[jackson-databind-2.13.5.jar!/:2.13.5]
	... 72 common frames omitted

Following Code can reproduce the issue:

public class Issue {

	public static void main(String[] args) throws IOException {
		String content = """
			{
				"guid": "dc9bc8f8-3cd1-4bee-85ec-bae9debe06bc",
			  	"created_at": "2024-05-24T17:52:47Z",
			  	"updated_at": "2024-05-24T17:52:47Z",
			  	"previous_droplet": {
			    	     "guid": null
			  	}
			}
			""";

		CreateDeploymentResponse cdr = new ObjectMapper().readValue(content, CreateDeploymentResponse.class);
                // Exception is thrown.
	}
}

This might be the root cause of the issue:

public final class Relationship extends org.cloudfoundry.client.v3._Relationship {

  //omitted 

  @Deprecated
  @JsonCreator(mode = JsonCreator.Mode.DELEGATING)
  static Relationship fromJson(Json json) {
    Relationship.Builder builder = Relationship.builder();
    if (json.id != null) {
      builder.id(json.id);
    }
    return builder.build(); //HERE: I believe if `id` is null, it should not attempt to build, but simply return null.
  }

  // omitted
}

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