org.springframework.core.codec.DecodingException: JSON decoding error: Cannot map `null` into type `int` (set DeserializationConfig.DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES to 'false' to allow)
If that gets added to EurekaHttpClientUtils.objectMapper(), then
Caused by: tools.jackson.databind.exc.ValueInstantiationException: Cannot construct instance of `com.netflix.discovery.shared.Application`, problem: Cannot invoke "java.util.List.iterator()" because "instances" is null
at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); byte offset: #42]
at tools.jackson.databind.exc.ValueInstantiationException.from(ValueInstantiationException.java:44)
at tools.jackson.databind.DeserializationContext.instantiationException(DeserializationContext.java:2076)
at tools.jackson.databind.deser.std.StdValueInstantiator.wrapAsDatabindException(StdValueInstantiator.java:581)
at tools.jackson.databind.deser.std.StdValueInstantiator.rewrapCtorProblem(StdValueInstantiator.java:602)
at tools.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:289)
at tools.jackson.databind.deser.ValueInstantiator.createFromObjectWith(ValueInstantiator.java:270)
at tools.jackson.databind.deser.bean.PropertyBasedCreator.build(PropertyBasedCreator.java:252)
at tools.jackson.databind.deser.bean.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:697)
at tools.jackson.databind.deser.bean.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1417)
at tools.jackson.databind.deser.bean.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:480)
at tools.jackson.databind.deser.bean.BeanDeserializer.deserialize(BeanDeserializer.java:200)
at tools.jackson.databind.deser.DeserializationContextExt.readRootValue(DeserializationContextExt.java:265)
at tools.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:1646)
at tools.jackson.databind.ObjectReader.readValue(ObjectReader.java:1171)
at org.springframework.http.codec.AbstractJacksonDecoder.decode(AbstractJacksonDecoder.java:200)
at org.springframework.http.codec.AbstractJacksonDecoder.lambda$decodeToMono$1(AbstractJacksonDecoder.java:185)
at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:132)
at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107)
at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onNext(FluxMapFuseable.java:299)
at reactor.core.publisher.FluxFilterFuseable$FilterFuseableConditionalSubscriber.onNext(FluxFilterFuseable.java:337)
at reactor.core.publisher.Operators$BaseFluxToMonoOperator.completePossiblyEmpty(Operators.java:2096)
at reactor.core.publisher.MonoCollect$CollectSubscriber.onComplete(MonoCollect.java:145)
at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144)
at reactor.core.publisher.FluxPeek$PeekSubscriber.onComplete(FluxPeek.java:260)
at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144)
at reactor.netty.channel.FluxReceive.onInboundComplete(FluxReceive.java:419)
at reactor.netty.channel.ChannelOperations.onInboundComplete(ChannelOperations.java:456)
at reactor.netty.channel.ChannelOperations.terminate(ChannelOperations.java:510)
at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:846)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:115)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:356)
at io.netty.handler.codec.http.HttpContentDecoder.decode(HttpContentDecoder.java:170)
at io.netty.handler.codec.http.HttpContentDecoder.decode(HttpContentDecoder.java:48)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:91)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:356)
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:434)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:249)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:354)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1429)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:918)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:168)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.handle(AbstractNioChannel.java:445)
at io.netty.channel.nio.NioIoHandler$DefaultNioRegistration.handle(NioIoHandler.java:381)
at io.netty.channel.nio.NioIoHandler.processSelectedKey(NioIoHandler.java:587)
at io.netty.channel.nio.NioIoHandler.processSelectedKeysOptimized(NioIoHandler.java:562)
at io.netty.channel.nio.NioIoHandler.processSelectedKeys(NioIoHandler.java:503)
at io.netty.channel.nio.NioIoHandler.run(NioIoHandler.java:475)
at io.netty.channel.SingleThreadIoEventLoop.runIo(SingleThreadIoEventLoop.java:225)
at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:196)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1193)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.NullPointerException: Cannot invoke "java.util.List.iterator()" because "instances" is null
at com.netflix.discovery.shared.Application.<init>(Application.java:95)
at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:732)
at tools.jackson.databind.introspect.AnnotatedConstructor.call(AnnotatedConstructor.java:113)
at tools.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:287)
... 50 more