java.lang.NoClassDefFoundError: org/springframework/util/Base64Utils
	at de.codecentric.boot.admin.server.web.client.BasicAuthHttpHeaderProvider.encode(BasicAuthHttpHeaderProvider.java:89)
	at de.codecentric.boot.admin.server.web.client.BasicAuthHttpHeaderProvider.getHeaders(BasicAuthHttpHeaderProvider.java:83)
	at de.codecentric.boot.admin.server.web.client.CompositeHttpHeadersProvider.lambda$getHeaders$0(CompositeHttpHeadersProvider.java:36)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
	at de.codecentric.boot.admin.server.web.client.CompositeHttpHeadersProvider.getHeaders(CompositeHttpHeadersProvider.java:36)
	at de.codecentric.boot.admin.server.web.client.InstanceExchangeFilterFunctions.lambda$addHeaders$0(InstanceExchangeFilterFunctions.java:70)
	at org.springframework.web.reactive.function.client.DefaultClientRequestBuilder.headers(DefaultClientRequestBuilder.java:114)
	at de.codecentric.boot.admin.server.web.client.InstanceExchangeFilterFunctions.lambda$addHeaders$1(InstanceExchangeFilterFunctions.java:70)
	at de.codecentric.boot.admin.server.web.client.InstanceWebClient.lambda$toExchangeFilterFunction$4(InstanceWebClient.java:68)
	at java.base/java.util.Optional.map(Optional.java:260)
	at de.codecentric.boot.admin.server.web.client.InstanceWebClient.lambda$toExchangeFilterFunction$6(InstanceWebClient.java:68)
	at org.springframework.web.reactive.function.client.ExchangeFilterFunction.lambda$andThen$0(ExchangeFilterFunction.java:62)
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:132)
	at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74)
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129)
	at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2571)
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:171)
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2367)
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:2241)
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:96)
	at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55)
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76)
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:53)
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76)
	at reactor.core.publisher.MonoDeferContextual.subscribe(MonoDeferContextual.java:55)
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76)
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:165)
	at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2571)
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.request(MonoFlatMap.java:194)
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.request(MonoFlatMap.java:194)
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2367)
	at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:2241)
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:117)
	at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:117)
	at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55)
	at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:53)
	at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76)
	at reactor.core.publisher.FluxRetryWhen.subscribe(FluxRetryWhen.java:81)
	at reactor.core.publisher.MonoRetryWhen.subscribeOrReturn(MonoRetryWhen.java:46)
	at reactor.core.publisher.Mono.subscribe(Mono.java:4560)
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:430)
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129)
	at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.tryOnNext(FluxFilterFuseable.java:148)
	at reactor.core.publisher.FluxIterable$IterableSubscriptionConditional.slowPath(FluxIterable.java:664)
	at reactor.core.publisher.FluxIterable$IterableSubscriptionConditional.request(FluxIterable.java:623)
	at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:191)
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.request(FluxMapFuseable.java:171)
	at reactor.core.publisher.FluxFlatMap$FlatMapMain.onSubscribe(FluxFlatMap.java:373)
	at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:96)
	at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:87)
	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:179)
	at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:83)
	at reactor.core.publisher.Mono.subscribe(Mono.java:4576)
	at reactor.core.publisher.FluxConcatMapNoPrefetch$FluxConcatMapNoPrefetchSubscriber.onNext(FluxConcatMapNoPrefetch.java:207)
	at reactor.core.publisher.FluxSubscribeOn$SubscribeOnSubscriber.onNext(FluxSubscribeOn.java:151)
	at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
	at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
	at reactor.core.publisher.FluxInterval$IntervalRunnable.run(FluxInterval.java:124)
	at reactor.core.scheduler.PeriodicWorkerTask.call(PeriodicWorkerTask.java:59)
	at reactor.core.scheduler.PeriodicWorkerTask.run(PeriodicWorkerTask.java:73)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:358)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1575)