spring-boot: because "this.condition" is null

springboot 2.6.0 :

2021-11-24 10:45:15,633 INFO [restartedMain] o.s.i.m.i.MqttPahoMessageDrivenChannelAdapter [LogAccessor.java : 292] started bean 'inbound'; defined in: 'class path resource [com/yaken/config/MqttConfig.class]'; from source: 'com.yaken.config.MqttConfig.inbound()'
2021-11-24 10:45:15,639 INFO [restartedMain] io.undertow [Undertow.java : 120] starting server: Undertow - 2.2.12.Final
2021-11-24 10:45:15,646 INFO [restartedMain] org.xnio [Xnio.java : 95] XNIO version 3.8.4.Final
2021-11-24 10:45:15,655 INFO [restartedMain] org.xnio.nio [NioXnio.java : 58] XNIO NIO Implementation Version 3.8.4.Final
2021-11-24 10:45:15,724 INFO [restartedMain] org.jboss.threads [Version.java : 52] JBoss Threads version 3.1.0.Final
2021-11-24 10:45:15,767 INFO [restartedMain] o.s.b.w.e.undertow.UndertowWebServer [UndertowWebServer.java : 119] Undertow started on port(s) 8888 (http)
2021-11-24 10:45:15,772 WARN [restartedMain] o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext [AbstractApplicationContext.java : 591] Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException: Cannot invoke "org.springframework.web.servlet.mvc.condition.PatternsRequestCondition.getPatterns()" because "this.condition" is null
2021-11-24 10:45:15,772 INFO [restartedMain] o.s.i.endpoint.EventDrivenConsumer [LogAccessor.java : 174] Removing {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2021-11-24 10:45:15,773 INFO [restartedMain] o.s.i.c.PublishSubscribeChannel [LogAccessor.java : 174] Channel 'yaken.errorChannel' has 0 subscriber(s).
2021-11-24 10:45:15,773 INFO [restartedMain] o.s.i.endpoint.EventDrivenConsumer [LogAccessor.java : 292] stopped bean '_org.springframework.integration.errorLogger'
2021-11-24 10:45:19,784 ERROR [MQTT Ping: 1133363739727241217_inbound] o.e.p.c.mqttv3.internal.ClientState [JSR47Logger.java : 210] 1133363739727241217_inbound: Timed out as no activity, keepAlive=2,000,000,000 lastOutboundActivity=86,592,399,738,807 lastInboundActivity=86,590,398,064,634 time=86,594,402,071,285 lastPing=86,592,399,744,206
2021-11-24 10:45:19,786 INFO [restartedMain] o.s.i.m.i.MqttPahoMessageDrivenChannelAdapter [LogAccessor.java : 292] stopped bean 'inbound'; defined in: 'class path resource [com/yaken/config/MqttConfig.class]'; from source: 'com.yaken.config.MqttConfig.inbound()'
2021-11-24 10:45:19,793 INFO [restartedMain] o.s.i.g.GatewayProxyFactoryBean$MethodInvocationGateway [LogAccessor.java : 292] stopped bean 'mqttGateway#sendToMqtt(String, String)'
2021-11-24 10:45:19,793 INFO [restartedMain] o.s.i.g.GatewayProxyFactoryBean [LogAccessor.java : 292] stopped bean 'mqttGateway'
2021-11-24 10:45:19,802 INFO [restartedMain] io.undertow [Undertow.java : 259] stopping server: Undertow - 2.2.12.Final
2021-11-24 10:45:19,824 INFO [restartedMain] o.s.b.a.l.ConditionEvaluationReportLoggingListener [ConditionEvaluationReportLoggingListener.java : 136] 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-11-24 10:45:19,845 ERROR [restartedMain] o.s.boot.SpringApplication [SpringApplication.java : 819] Application run failed
org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException: Cannot invoke "org.springframework.web.servlet.mvc.condition.PatternsRequestCondition.getPatterns()" because "this.condition" is null
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181)
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54)
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356)
	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155)
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123)
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:302)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290)
	at com.yaken.YakenApplication.main(YakenApplication.java:24)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.lang.NullPointerException: Cannot invoke "org.springframework.web.servlet.mvc.condition.PatternsRequestCondition.getPatterns()" because "this.condition" is null
	at springfox.documentation.spring.web.WebMvcPatternsRequestConditionWrapper.getPatterns(WebMvcPatternsRequestConditionWrapper.java:56)
	at springfox.documentation.RequestHandler.sortedPaths(RequestHandler.java:113)
	at springfox.documentation.spi.service.contexts.Orderings.lambda$byPatternsCondition$3(Orderings.java:89)
	at java.base/java.util.Comparator.lambda$comparing$77a9974f$1(Comparator.java:473)
	at java.base/java.util.TimSort.countRunAndMakeAscending(TimSort.java:355)
	at java.base/java.util.TimSort.sort(TimSort.java:234)
	at java.base/java.util.Arrays.sort(Arrays.java:1307)
	at java.base/java.util.ArrayList.sort(ArrayList.java:1721)
	at java.base/java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:392)
	at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258)
	at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258)
	at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258)
	at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:510)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
	at springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider.requestHandlers(WebMvcRequestHandlerProvider.java:81)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
	at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.withDefaults(AbstractDocumentationPluginsBootstrapper.java:107)
	at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.buildContext(AbstractDocumentationPluginsBootstrapper.java:91)
	at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.bootstrapDocumentationPlugins(AbstractDocumentationPluginsBootstrapper.java:82)
	at springfox.documentation.spring.web.plugins.DocumentationPluginsBootstrapper.start(DocumentationPluginsBootstrapper.java:100)
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178)
	... 19 common frames omitted