Error creating bean with name 'couchbaseClient' defined in class path resource

[INFO] Scanning for projects…
[INFO]
[INFO] -------------------< com.schrack:schrackforstudents >-------------------
[INFO] Building schrackforstudents 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] — maven-resources-plugin:3.1.0:resources (default-resources) at schrackforstudents —
[INFO] Using ‘UTF-8’ encoding to copy filtered resources.
[INFO] Copying 2 resources
[INFO] Copying 0 resource
[INFO]
[INFO] — maven-compiler-plugin:3.8.0:compile (default-compile) at schrackforstudents —
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] — maven-resources-plugin:3.1.0:testResources (default-testResources) at schrackforstudents —
[INFO] Using ‘UTF-8’ encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\chandramohannataraj\source\repos\schrackforstudents_javabackend\src\test\resources
[INFO]
[INFO] — maven-compiler-plugin:3.8.0:testCompile (default-testCompile) at schrackforstudents —
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] — maven-surefire-plugin:2.22.1:test (default-test) at schrackforstudents —
[INFO]
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.schrack.schrackforstudents.SchrackforstudentsApplicationTests
14:26:04.848 [main] DEBUG org.springframework.test.context.junit4.SpringJUnit4ClassRunner - SpringJUnit4ClassRunner constructor called with [class com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:04.853 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating CacheAwareContextLoaderDelegate from class [org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate]
14:26:04.863 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating BootstrapContext using constructor [public org.springframework.test.context.support.DefaultBootstrapContext(java.lang.Class,org.springframework.test.context.CacheAwareContextLoaderDelegate)]
14:26:04.881 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating TestContextBootstrapper for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests] from class [org.springframework.boot.test.context.SpringBootTestContextBootstrapper]
14:26:04.892 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither atContextConfiguration nor atContextHierarchy found for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests], using SpringBootContextLoader
14:26:04.895 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]: class path resource [com/schrack/schrackforstudents/SchrackforstudentsApplicationTests-context.xml] does not exist
14:26:04.896 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]: class path resource [com/schrack/schrackforstudents/SchrackforstudentsApplicationTestsContext.groovy] does not exist
14:26:04.896 [main] INFO org.springframework.test.context.support.AbstractContextLoader - Could not detect default resource locations for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]: no resource found for suffixes {-context.xml, Context.groovy}.
14:26:04.897 [main] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils - Could not detect default configuration classes for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]: SchrackforstudentsApplicationTests does not declare any static, non-private, non-final, nested classes annotated with atConfiguration.
14:26:04.932 [main] DEBUG org.springframework.test.context.support.ActiveProfilesUtils - Could not find an ‘annotation declaring class’ for annotation type [org.springframework.test.context.ActiveProfiles] and class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.017 [main] DEBUG org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider - Identified candidate component class: file [C:\Users\chandramohannataraj\source\repos\schrackforstudents_javabackend\target\classes\com\schrack\schrackforstudents\SchrackforstudentsApplication.class]
14:26:05.018 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Found atSpringBootConfiguration com.schrack.schrackforstudents.SchrackforstudentsApplication for test class com.schrack.schrackforstudents.SchrackforstudentsApplicationTests
14:26:05.107 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - atTestExecutionListeners is not present for class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]: using defaults.
14:26:05.107 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.boot.test.mock.mockito.MockitoTestExecutionListener, org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener, org.springframework.boot.test.autoconfigure.restdocs.RestDocsTestExecutionListener, org.springframework.boot.test.autoconfigure.web.client.MockRestServiceServerResetTestExecutionListener, org.springframework.boot.test.autoconfigure.web.servlet.MockMvcPrintOnlyOnFailureTestExecutionListener, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverTestExecutionListener, org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener, org.springframework.security.test.context.support.WithSecurityContextTestExecutionListener, org.springframework.security.test.context.support.ReactorContextTestExecutionListener]
14:26:05.138 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using TestExecutionListeners: [org.springframework.test.context.web.ServletTestExecutionListenerat5c6648b0, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListenerat6f1de4c7, org.springframework.boot.test.mock.mockito.MockitoTestExecutionListenerat459e9125, org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListenerat128d2484, org.springframework.test.context.support.DirtiesContextTestExecutionListenerat7cc0cdad, org.springframework.test.context.transaction.TransactionalTestExecutionListenerat7c7b252e, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListenerat4d5d943d, org.springframework.security.test.context.support.WithSecurityContextTestExecutionListenerat368f2016, org.springframework.security.test.context.support.ReactorContextTestExecutionListenerat4c583ecf, org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListenerat692f203f, org.springframework.boot.test.autoconfigure.restdocs.RestDocsTestExecutionListenerat48f2bd5b, org.springframework.boot.test.autoconfigure.web.client.MockRestServiceServerResetTestExecutionListenerat7b2bbc3, org.springframework.boot.test.autoconfigure.web.servlet.MockMvcPrintOnlyOnFailureTestExecutionListenerata1153bc, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverTestExecutionListenerat1aafa419]
14:26:05.140 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved atProfileValueSourceConfiguration [null] for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.141 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.143 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved atProfileValueSourceConfiguration [null] for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.144 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.145 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved atProfileValueSourceConfiguration [null] for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.145 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.154 [main] DEBUG org.springframework.test.context.support.AbstractDirtiesContextTestExecutionListener - Before test class: context [DefaultTestContextat411f53a0 testClass = SchrackforstudentsApplicationTests, testInstance = [null], testMethod = [null], testException = [null], mergedContextConfiguration = [WebMergedContextConfigurationat2b71e916 testClass = SchrackforstudentsApplicationTests, locations = ‘{}’, classes = ‘{class com.schrack.schrackforstudents.SchrackforstudentsApplication}’, contextInitializerClasses = ‘’, activeProfiles = ‘{}’, propertySourceLocations = ‘{}’, propertySourceProperties = ‘{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}’, contextCustomizers = set[org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizerat3ecd23d9, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizerat33723e30, org.springframework.boot.test.mock.mockito.MockitoContextCustomizerat0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizerat4fb64261, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizerat0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizerat149494d8], resourceBasePath = ‘src/main/webapp’, contextLoader = ‘org.springframework.boot.test.context.SpringBootContextLoader’, parent = [null]], attributes = map[‘org.springframework.test.context.web.ServletTestExecutionListener.activateListener’ -> true]], class annotated with atDirtiesContext [false] with mode [null].
14:26:05.156 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved atProfileValueSourceConfiguration [null] for test class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.156 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [com.schrack.schrackforstudents.SchrackforstudentsApplicationTests]
14:26:05.183 [main] DEBUG org.springframework.test.context.support.TestPropertySourceUtils - Adding inlined properties to environment: {spring.jmx.enabled=false, org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true, server.port=-1}

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:: Spring Boot :: (v2.1.3.RELEASE)

2019-04-15 14:26:05.533 WARN 3808 — [ main] ory$DuplicateJsonObjectContextCustomizer :

Found multiple occurrences of org.json.JSONObject on the class path:

jar:file:/C:/Users/chandramohannataraj/.m2/repository/com/vaadin/external/google/android-json/0.0.20131108.vaadin1/android-json-0.0.20131108.vaadin1.jar!/org/json/JSONObject.class
jar:file:/C:/Users/chandramohannataraj/.m2/repository/org/json/json/20180813/json-20180813.jar!/org/json/JSONObject.class

You may wish to exclude one of them to ensure predictable runtime behavior

2019-04-15 14:26:05.548 INFO 3808 — [ main] c.s.s.SchrackforstudentsApplicationTests : Starting SchrackforstudentsApplicationTests on Chand3149735 with PID 3808 (started by chandramohannataraj in C:\Users\chandramohannataraj\source\repos\schrackforstudents_javabackend)
2019-04-15 14:26:05.548 INFO 3808 — [ main] c.s.s.SchrackforstudentsApplicationTests : No active profile set, falling back to default profiles: default
2019-04-15 14:26:06.633 INFO 3808 — [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2019-04-15 14:26:06.636 INFO 3808 — [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-04-15 14:26:06.691 INFO 3808 — [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 43ms. Found 0 repository interfaces.
2019-04-15 14:26:07.287 INFO 3808 — [ main] trationDelegate$BeanPostProcessorChecker : Bean ‘org.springframework.security.config.annotation.configuration.ObjectPostProcessorConfiguration’ of type [org.springframework.security.config.annotation.configuration.ObjectPostProcessorConfiguration$$EnhancerBySpringCGLIB$$ca80677c] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-15 14:26:07.298 INFO 3808 — [ main] trationDelegate$BeanPostProcessorChecker : Bean ‘objectPostProcessor’ of type [org.springframework.security.config.annotation.configuration.AutowireBeanFactoryObjectPostProcessor] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-15 14:26:07.299 INFO 3808 — [ main] trationDelegate$BeanPostProcessorChecker : Bean ‘org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandlerat159a48a6’ of type [org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-15 14:26:07.309 INFO 3808 — [ main] trationDelegate$BeanPostProcessorChecker : Bean ‘org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration’ of type [org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration$$EnhancerBySpringCGLIB$$ef550a2e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-15 14:26:07.315 INFO 3808 — [ main] trationDelegate$BeanPostProcessorChecker : Bean ‘methodSecurityMetadataSource’ of type [org.springframework.security.access.method.DelegatingMethodSecurityMetadataSource] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-15 14:26:07.335 INFO 3808 — [ main] trationDelegate$BeanPostProcessorChecker : Bean ‘org.springframework.hateoas.config.HateoasConfiguration’ of type [org.springframework.hateoas.config.HateoasConfiguration$$EnhancerBySpringCGLIB$$b152ec74] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-15 14:26:08.438 INFO 3808 — [ main] o.s.s.web.DefaultSecurityFilterChain : Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilterat7d04529c, org.springframework.security.web.context.SecurityContextPersistenceFilterat212dfd39, org.springframework.security.web.header.HeaderWriterFilterat2e6f610d, org.springframework.security.web.authentication.logout.LogoutFilterat2e179f3e, com.schrack.schrackforstudents.security.JwtAuthenticationTokenFilterat1a0b5323, org.springframework.security.web.savedrequest.RequestCacheAwareFilterat65d57e4e, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilterat7a8406c2, org.springframework.security.web.authentication.AnonymousAuthenticationFilterat14fa92af, org.springframework.security.web.session.SessionManagementFilterat10afe71a, org.springframework.security.web.access.ExceptionTranslationFilterat5ba26eb0, org.springframework.security.web.access.intercept.FilterSecurityInterceptorat68880c21]
2019-04-15 14:26:09.246 INFO 3808 — [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService ‘applicationTaskExecutor’
2019-04-15 14:26:09.554 WARN 3808 — [ main] c.c.client.core.env.CoreEnvironment : More than 1 Couchbase Environments found (2), this can have severe impact on performance and stability. Reuse environments!
2019-04-15 14:26:09.592 INFO 3808 — [ main] com.couchbase.client.core.CouchbaseCore : CouchbaseEnvironment: {sslEnabled=false, sslKeystoreFile=‘null’, sslTruststoreFile=‘null’, sslKeystorePassword=false, sslTruststorePassword=false, sslKeystore=null, sslTruststore=null, bootstrapHttpEnabled=true, bootstrapCarrierEnabled=true, bootstrapHttpDirectPort=8091, bootstrapHttpSslPort=18091, bootstrapCarrierDirectPort=11210, bootstrapCarrierSslPort=11207, ioPoolSize=8, computationPoolSize=8, responseBufferSize=16384, requestBufferSize=16384, kvServiceEndpoints=1, viewServiceEndpoints=12, queryServiceEndpoints=12, searchServiceEndpoints=12, configPollInterval=2500, configPollFloorInterval=50, networkResolution=NetworkResolution{name=‘auto’}, ioPool=NioEventLoopGroup, kvIoPool=null, viewIoPool=null, searchIoPool=null, queryIoPool=null, analyticsIoPool=null, coreScheduler=CoreScheduler, memcachedHashingStrategy=DefaultMemcachedHashingStrategy, eventBus=DefaultEventBus, packageNameAndVersion=couchbase-java-client/2.7.2 (git: 2.7.2, core: 1.7.2), retryStrategy=BestEffort, maxRequestLifetime=75000, retryDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=100, upper=100000}, reconnectDelay=ExponentialDelay{growBy 1.0 MILLISECONDS, powers of 2; lower=32, upper=4096}, observeIntervalDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=10, upper=100000}, keepAliveInterval=30000, continuousKeepAliveEnabled=true, keepAliveErrorThreshold=4, keepAliveTimeout=2500, autoreleaseAfter=2000, bufferPoolingEnabled=true, tcpNodelayEnabled=true, mutationTokensEnabled=false, socketConnectTimeout=1000, callbacksOnIoPool=false, disconnectTimeout=25000, requestBufferWaitStrategy=com.couchbase.client.core.env.DefaultCoreEnvironment$4at6e3ecf5c, certAuthEnabled=false, coreSendHook=null, forceSaslPlain=false, compressionMinRatio=0.83, compressionMinSize=32, compressionEnabled=true, operationTracingEnabled=true, operationTracingServerDurationEnabled=true, tracer=ThresholdLogTracer, orphanResponseReportingEnabled=true, orphanResponseReporter=DefaultOrphanResponseReporter, keyValueServiceConfig=KeyValueServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=true, idleTime=0}, queryServiceConfig=QueryServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=false, idleTime=300}, searchServiceConfig=SearchServiceConfig{minEndpoints=0, maxEndpoints=12, pipelined=false, idleTime=300}, viewServiceConfig=ViewServiceConfig{minEndpoints=1, maxEndpoints=1, pipelined=false, idleTime=300}, analyticsServiceConfig=AnalyticsServiceConfig{minEndpoints=0, maxEndpoints=12, pipelined=false, idleTime=300}, queryTimeout=7500, viewTimeout=7500, searchTimeout=75000, analyticsTimeout=75000, kvTimeout=2500, connectTimeout=5000, dnsSrvEnabled=false, propagateParentSpan=true}
2019-04-15 14:26:15.013 INFO 3808 — [ cb-io-3-1] com.couchbase.client.core.node.Node : Connected to Node 192.168.56.101/192.168.56.101
2019-04-15 14:26:19.217 WARN 3808 — [ main] o.s.w.c.s.GenericWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘couchbaseClient’ defined in class path resource [org/springframework/boot/autoconfigure/couchbase/CouchbaseConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.couchbase.client.java.Bucket]: Factory method ‘couchbaseClient’ threw exception; nested exception is java.lang.RuntimeException: java.util.concurrent.TimeoutException
2019-04-15 14:26:19.232 INFO 3808 — [ cb-io-3-1] c.c.client.core.endpoint.Endpoint : [/192.168.56.101:11210][KeyValueEndpoint]: Got notified from Channel as inactive, attempting reconnect.
2019-04-15 14:26:19.234 INFO 3808 — [ cb-io-3-1] com.couchbase.client.core.node.Node : Disconnected from Node 192.168.56.101/192.168.56.101
2019-04-15 14:26:19.237 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown kvIoPool: success
2019-04-15 14:26:19.238 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown viewIoPool: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown queryIoPool: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown searchIoPool: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown Core Scheduler: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown Runtime Metrics Collector: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown Latency Metrics Collector: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown analyticsIoPool: success
2019-04-15 14:26:19.239 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown Tracer: success
2019-04-15 14:26:19.240 INFO 3808 — [ main] c.c.client.core.env.CoreEnvironment : Shutdown OrphanReporter: success
2019-04-15 14:26:19.238 INFO 3808 — [ Thread-12] c.c.client.core.env.CoreEnvironment : Shutdown Netty: success
2019-04-15 14:26:19.243 WARN 3808 — [ cb-io-3-1] c.c.c.d.i.netty.channel.AbstractChannel : Force-closing a channel whose registration task was not accepted by an event loop: [id: 0x42c3251a]

java.util.concurrent.RejectedExecutionException: event executor terminated
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:796) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:336) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:329) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:739) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:425) ~[core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:72) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:60) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.MultithreadEventLoopGroup.register(MultithreadEventLoopGroup.java:65) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:323) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.bootstrap.Bootstrap.doConnect(Bootstrap.java:134) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:90) [core-io-1.7.2.jar:na]
at com.couchbase.client.core.endpoint.BootstrapAdapter.connect(BootstrapAdapter.java:50) [core-io-1.7.2.jar:na]
at com.couchbase.client.core.endpoint.AbstractEndpoint$4.call(AbstractEndpoint.java:354) [core-io-1.7.2.jar:na]
at com.couchbase.client.core.endpoint.AbstractEndpoint$4.call(AbstractEndpoint.java:351) [core-io-1.7.2.jar:na]
at rx.internal.operators.SingleTimeout.call(SingleTimeout.java:58) [rxjava-1.3.8.jar:1.3.8]
at rx.internal.operators.SingleTimeout.call(SingleTimeout.java:26) [rxjava-1.3.8.jar:1.3.8]
at rx.Single.subscribe(Single.java:1979) [rxjava-1.3.8.jar:1.3.8]
at rx.internal.operators.SingleOperatorOnErrorResumeNext.call(SingleOperatorOnErrorResumeNext.java:77) [rxjava-1.3.8.jar:1.3.8]
at rx.internal.operators.SingleOperatorOnErrorResumeNext.call(SingleOperatorOnErrorResumeNext.java:23) [rxjava-1.3.8.jar:1.3.8]
at rx.Single.subscribe(Single.java:1979) [rxjava-1.3.8.jar:1.3.8]
at com.couchbase.client.core.endpoint.AbstractEndpoint.doConnect(AbstractEndpoint.java:393) [core-io-1.7.2.jar:na]
at com.couchbase.client.core.endpoint.AbstractEndpoint.connect(AbstractEndpoint.java:338) [core-io-1.7.2.jar:na]
at com.couchbase.client.core.endpoint.AbstractEndpoint.notifyChannelInactive(AbstractEndpoint.java:611) [core-io-1.7.2.jar:na]
at com.couchbase.client.core.endpoint.AbstractGenericHandler.channelInactive(AbstractGenericHandler.java:560) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:240) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:226) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.handler.codec.memcache.AbstractMemcacheObjectAggregator.channelInactive(AbstractMemcacheObjectAggregator.java:110) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:240) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:226) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelInactive(CombinedChannelDuplexHandler.java:420) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:379) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:344) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.handler.codec.memcache.binary.AbstractBinaryMemcacheDecoder.channelInactive(AbstractBinaryMemcacheDecoder.java:226) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.handler.codec.memcache.binary.BinaryMemcacheClientCodec$Decoder.channelInactive(BinaryMemcacheClientCodec.java:107) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:223) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:240) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:226) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:219) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.handler.timeout.IdleStateHandler.channelInactive(IdleStateHandler.java:277) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:240) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:226) [core-io-1.7.2.jar:na]
at com.couchbase.client.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChanne

Can you show us how you are connecting to CB? seems to be a problem with your config.