1. 2019-08-10 18:05:08.941 ERROR 823 --- [elastic-2] reactor.core.publisher.Operators         : Operator called default onErrorDropped
2.  
3. java.lang.NullPointerException: null
4.         at java.util.HashMap.merge(HashMap.java:1225)
5.         at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320)
6.         at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
7.         at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
8.         at java.util.Iterator.forEachRemaining(Iterator.java:116)
9.         at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
10.         at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
11.         at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
12.         at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
13.         at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
14.         at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
15.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer.getHeadersIfIncluded(HttpExchangeTracer.java:107)
16.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer.access$200(HttpExchangeTracer.java:38)
17.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer$FilteredTraceableResponse.getHeaders(HttpExchangeTracer.java:170)
18.         at org.springframework.boot.actuate.trace.http.HttpTrace$Response.<init>(HttpTrace.java:185)
19.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer.sendingResponse(HttpExchangeTracer.java:76)
20.         at org.springframework.boot.actuate.web.trace.reactive.HttpTraceWebFilter.lambda$filter$3(HttpTraceWebFilter.java:103)
21.         at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onComplete(MonoPeekTerminal.java:325)
22.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
23.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
24.         at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:1713)
25.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
26.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
27.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
28.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
29.         at org.springframework.http.server.reactive.ChannelSendOperator$WriteCompletionBarrier.onComplete(ChannelSendOperator.java:374)
30.         at reactor.core.publisher.MonoIgnoreElements$IgnoreElementsSubscriber.onComplete(MonoIgnoreElements.java:81)
31.         at reactor.core.publisher.FluxConcatIterable$ConcatIterableSubscriber.onComplete(FluxConcatIterable.java:120)
32.         at reactor.core.publisher.MonoNext$NextSubscriber.onComplete(MonoNext.java:96)
33.         at org.springframework.http.server.reactive.WriteResultPublisher$State.publishComplete(WriteResultPublisher.java:244)
34.         at org.springframework.http.server.reactive.WriteResultPublisher.publishComplete(WriteResultPublisher.java:84)
35.         at org.springframework.http.server.reactive.AbstractListenerWriteFlushProcessor$State$3.writeComplete(AbstractListenerWriteFlushProcessor.java:291)
36.         at org.springframework.http.server.reactive.AbstractListenerWriteFlushProcessor$State$WriteResultSubscriber.onComplete(AbstractListenerWriteFlushProcessor.java:415)
37.         at org.springframework.http.server.reactive.WriteResultPublisher$State.publishComplete(WriteResultPublisher.java:244)
38.         at org.springframework.http.server.reactive.WriteResultPublisher.publishComplete(WriteResultPublisher.java:84)
39.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor.changeStateToComplete(AbstractListenerWriteProcessor.java:269)
40.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor.access$400(AbstractListenerWriteProcessor.java:45)
41.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor$State$2.onComplete(AbstractListenerWriteProcessor.java:341)
42.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor.onComplete(AbstractListenerWriteProcessor.java:131)
43.         at org.springframework.http.server.reactive.ChannelSendOperator$WriteBarrier.onComplete(ChannelSendOperator.java:221)
44.         at reactor.core.publisher.FluxJust$WeakScalarSubscription.request(FluxJust.java:101)
45.         at org.springframework.http.server.reactive.ChannelSendOperator$WriteBarrier.onSubscribe(ChannelSendOperator.java:164)
46.         at reactor.core.publisher.FluxJust.subscribe(FluxJust.java:70)
47.         at org.springframework.http.server.reactive.ChannelSendOperator.subscribe(ChannelSendOperator.java:75)
48.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
49.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:92)
50.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
51.         at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2041)
52.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162)
53.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.request(FluxDefaultIfEmpty.java:68)
54.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103)
55.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onSubscribe(FluxDefaultIfEmpty.java:82)
56.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
57.         at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54)
58.         at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59)
59.         at reactor.core.publisher.MonoDefaultIfEmpty.subscribe(MonoDefaultIfEmpty.java:37)
60.         at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60)
61.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
62.         at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1476)
63.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241)
64.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:92)
65.         at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:73)
66.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
67.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
68.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
69.         at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1476)
70.         at reactor.core.publisher.MonoCollect$CollectSubscriber.onComplete(MonoCollect.java:142)
71.         at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:794)
72.         at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:560)
73.         at reactor.core.publisher.FluxFlatMap$FlatMapMain.innerComplete(FluxFlatMap.java:863)
74.         at reactor.core.publisher.FluxFlatMap$FlatMapInner.onComplete(FluxFlatMap.java:957)
75.         at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1463)
76.         at reactor.core.publisher.MonoZip$ZipCoordinator.signal(MonoZip.java:247)
77.         at reactor.core.publisher.MonoZip$ZipInner.onNext(MonoZip.java:329)
78.         at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:147)
79.         at org.springframework.boot.actuate.health.HealthIndicatorReactiveAdapter.invoke(HealthIndicatorReactiveAdapter.java:49)
80.         at org.springframework.boot.actuate.health.HealthIndicatorReactiveAdapter.lambda$null$0(HealthIndicatorReactiveAdapter.java:43)
81.         at reactor.core.scheduler.ElasticScheduler$DirectScheduleTask.run(ElasticScheduler.java:292)
82.         at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:50)
83.         at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:27)
84.         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
85.         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
86.         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
87.         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
88.         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
89.         at java.lang.Thread.run(Thread.java:748)
90.  
91. 2019-08-10 18:05:08.943 ERROR 823 --- [elastic-2] reactor.core.scheduler.Schedulers        : Scheduler worker in group main failed with an uncaught exception
92.  
93. java.lang.NullPointerException: null
94.         at java.util.HashMap.merge(HashMap.java:1225)
95.         at java.util.stream.Collectors.lambda$toMap$58(Collectors.java:1320)
96.         at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
97.         at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
98.         at java.util.Iterator.forEachRemaining(Iterator.java:116)
99.         at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
100.         at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
101.         at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
102.         at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
103.         at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
104.         at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
105.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer.getHeadersIfIncluded(HttpExchangeTracer.java:107)
106.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer.access$200(HttpExchangeTracer.java:38)
107.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer$FilteredTraceableResponse.getHeaders(HttpExchangeTracer.java:170)
108.         at org.springframework.boot.actuate.trace.http.HttpTrace$Response.<init>(HttpTrace.java:185)
109.         at org.springframework.boot.actuate.trace.http.HttpExchangeTracer.sendingResponse(HttpExchangeTracer.java:76)
110.         at org.springframework.boot.actuate.web.trace.reactive.HttpTraceWebFilter.lambda$filter$3(HttpTraceWebFilter.java:103)
111.         at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onComplete(MonoPeekTerminal.java:325)
112.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
113.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
114.         at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:1713)
115.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
116.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
117.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
118.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
119.         at org.springframework.http.server.reactive.ChannelSendOperator$WriteCompletionBarrier.onComplete(ChannelSendOperator.java:374)
120.         at reactor.core.publisher.MonoIgnoreElements$IgnoreElementsSubscriber.onComplete(MonoIgnoreElements.java:81)
121.         at reactor.core.publisher.FluxConcatIterable$ConcatIterableSubscriber.onComplete(FluxConcatIterable.java:120)
122.         at reactor.core.publisher.MonoNext$NextSubscriber.onComplete(MonoNext.java:96)
123.         at org.springframework.http.server.reactive.WriteResultPublisher$State.publishComplete(WriteResultPublisher.java:244)
124.         at org.springframework.http.server.reactive.WriteResultPublisher.publishComplete(WriteResultPublisher.java:84)
125.         at org.springframework.http.server.reactive.AbstractListenerWriteFlushProcessor$State$3.writeComplete(AbstractListenerWriteFlushProcessor.java:291)
126.         at org.springframework.http.server.reactive.AbstractListenerWriteFlushProcessor$State$WriteResultSubscriber.onComplete(AbstractListenerWriteFlushProcessor.java:415)
127.         at org.springframework.http.server.reactive.WriteResultPublisher$State.publishComplete(WriteResultPublisher.java:244)
128.         at org.springframework.http.server.reactive.WriteResultPublisher.publishComplete(WriteResultPublisher.java:84)
129.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor.changeStateToComplete(AbstractListenerWriteProcessor.java:269)
130.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor.access$400(AbstractListenerWriteProcessor.java:45)
131.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor$State$2.onComplete(AbstractListenerWriteProcessor.java:341)
132.         at org.springframework.http.server.reactive.AbstractListenerWriteProcessor.onComplete(AbstractListenerWriteProcessor.java:131)
133.         at org.springframework.http.server.reactive.ChannelSendOperator$WriteBarrier.onComplete(ChannelSendOperator.java:221)
134.         at reactor.core.publisher.FluxJust$WeakScalarSubscription.request(FluxJust.java:101)
135.         at org.springframework.http.server.reactive.ChannelSendOperator$WriteBarrier.onSubscribe(ChannelSendOperator.java:164)
136.         at reactor.core.publisher.FluxJust.subscribe(FluxJust.java:70)
137.         at org.springframework.http.server.reactive.ChannelSendOperator.subscribe(ChannelSendOperator.java:75)
138.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
139.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:92)
140.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
141.         at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2041)
142.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:162)
143.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.request(FluxDefaultIfEmpty.java:68)
144.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:103)
145.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onSubscribe(FluxDefaultIfEmpty.java:82)
146.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
147.         at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:54)
148.         at reactor.core.publisher.MonoMapFuseable.subscribe(MonoMapFuseable.java:59)
149.         at reactor.core.publisher.MonoDefaultIfEmpty.subscribe(MonoDefaultIfEmpty.java:37)
150.         at reactor.core.publisher.MonoFlatMap.subscribe(MonoFlatMap.java:60)
151.         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:150)
152.         at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1476)
153.         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:241)
154.         at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:92)
155.         at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:73)
156.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
157.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
158.         at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:121)
159.         at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1476)
160.         at reactor.core.publisher.MonoCollect$CollectSubscriber.onComplete(MonoCollect.java:142)
161.         at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:794)
162.         at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:560)
163.         at reactor.core.publisher.FluxFlatMap$FlatMapMain.innerComplete(FluxFlatMap.java:863)
164.         at reactor.core.publisher.FluxFlatMap$FlatMapInner.onComplete(FluxFlatMap.java:957)
165.         at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1463)
166.         at reactor.core.publisher.MonoZip$ZipCoordinator.signal(MonoZip.java:247)
167.         at reactor.core.publisher.MonoZip$ZipInner.onNext(MonoZip.java:329)
168.         at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:147)
169.         at org.springframework.boot.actuate.health.HealthIndicatorReactiveAdapter.invoke(HealthIndicatorReactiveAdapter.java:49)
170.         at org.springframework.boot.actuate.health.HealthIndicatorReactiveAdapter.lambda$null$0(HealthIndicatorReactiveAdapter.java:43)
171.         at reactor.core.scheduler.ElasticScheduler$DirectScheduleTask.run(ElasticScheduler.java:292)
172.         at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:50)
173.         at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:27)
174.         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
175.         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
176.         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
177.         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
178.         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
179.         at java.lang.Thread.run(Thread.java:748)