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com.example.IssueApplication$NotFound: null	at com.example.IssueApplication$ExampleController.notFound1(IssueApplication.java:24)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:497)	at org.springframework.web.reactive.result.method.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:172)	at org.springframework.web.reactive.result.method.InvocableHandlerMethod.lambda$invokeForRequest$0(InvocableHandlerMethod.java:95)	at reactor.core.publisher.FluxFlatMap.trySubscribeScalarMap(FluxFlatMap.java:145)	at reactor.core.publisher.MonoThenApply.subscribe(MonoThenApply.java:50)	at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:66)	at reactor.core.publisher.MonoOtherwise.subscribe(MonoOtherwise.java:47)	at reactor.core.publisher.MonoThenApply$MonoThenApplyManager.onNext(MonoThenApply.java:131)	at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:71)	at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:81)	at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:383)	at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:192)	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:95)	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:59)	at reactor.core.publisher.FluxConcatMap.subscribe(FluxConcatMap.java:116)	at reactor.core.publisher.MonoNext.subscribe(MonoNext.java:44)	at reactor.core.publisher.MonoOtherwiseIfEmpty.subscribe(MonoOtherwiseIfEmpty.java:47)	at reactor.core.publisher.MonoThenApply.subscribe(MonoThenApply.java:57)	at reactor.core.publisher.MonoThenApply.subscribe(MonoThenApply.java:57)	at reactor.core.publisher.MonoOtherwise.subscribe(MonoOtherwise.java:47)	at reactor.core.publisher.MonoOtherwise.subscribe(MonoOtherwise.java:47)	at reactor.core.publisher.MonoOtherwise.subscribe(MonoOtherwise.java:47)	at reactor.core.publisher.MonoThenSupply$MonoConcatIgnoreManager.drain(MonoThenSupply.java:166)	at reactor.core.publisher.MonoThenSupply.subscribe(MonoThenSupply.java:54)	at reactor.ipc.netty.http.NettyHttpServerHandler.channelRead(NettyHttpServerHandler.java:92)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:435)	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:250)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:123)	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:571)	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:512)	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:426)	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:398)	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)	at java.lang.Thread.run(Thread.java:745)