org.hibernate.id.IdentifierGenerationException

attempted to assign id from null one-to-one property [com.coderscampus.domain.Cart.user]

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  • attempted to assign id from null one-to-one property [com.coderscampus.domain.Cart.user]
  • attempted to assign id from null one-to-one property […]
  • attempted to assign id from null one-to-one property […]
  • Stack trace

    • org.hibernate.id.IdentifierGenerationException: attempted to assign id from null one-to-one property [com.coderscampus.domain.Cart.user] at org.hibernate.id.ForeignGenerator.generate(ForeignGenerator.java:98)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:118)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.jpa.event.internal.core.JpaMergeEventListener.saveWithGeneratedId(JpaMergeEventListener.java:73)[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.saveTransientEntity(DefaultMergeEventListener.java:271)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:251)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:189)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:886)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:868)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.engine.spi.CascadingActions$6.cascade(CascadingActions.java:277)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:350)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:293)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:161)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:118)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:474)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.entityIsPersistent(DefaultMergeEventListener.java:218)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:192)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:85)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:876)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:858)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:863)[hibernate-core-4.3.11.Final.jar:4.3.11.Final] at org.hibernate.jpa.spi.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:1196)[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_91] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at java.lang.reflect.Method.invoke(Unknown Source)[na:1.8.0_91] at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:344)[spring-orm-4.2.6.RELEASE.jar:4.2.6.RELEASE] at com.sun.proxy.$Proxy84.merge(Unknown Source)[na:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_91] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at java.lang.reflect.Method.invoke(Unknown Source)[na:1.8.0_91] at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:294)[spring-orm-4.2.6.RELEASE.jar:4.2.6.RELEASE] at com.sun.proxy.$Proxy84.merge(Unknown Source)[na:na] at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:442)[spring-data-jpa-1.9.4.RELEASE.jar:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_91] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at java.lang.reflect.Method.invoke(Unknown Source)[na:1.8.0_91] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:483)[spring-data-commons-1.11.4.RELEASE.jar:na] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:468)[spring-data-commons-1.11.4.RELEASE.jar:na] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:440)[spring-data-commons-1.11.4.RELEASE.jar:na] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:61)[spring-data-commons-1.11.4.RELEASE.jar:na] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)[spring-tx-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)[spring-tx-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)[spring-tx-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)[spring-tx-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:131)[spring-data-jpa-1.9.4.RELEASE.jar:na] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)[spring-aop-4.2.6.RELEASE.jar:4.2.6.RELEASE] at com.sun.proxy.$Proxy87.save(Unknown Source)[na:na] at com.coderscampus.web.ConsumerProductController.addProductToCart(ConsumerProductController.java:60)[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_91] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[na:1.8.0_91] at java.lang.reflect.Method.invoke(Unknown Source)[na:1.8.0_91] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:832)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:743)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)[spring-webmvc-4.2.6.RELEASE.jar:4.2.6.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)[tomcat-embed-websocket-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)[spring-security-web-4.0.4.RELEASE.jar:4.0.4.RELEASE] at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)[spring-web-4.2.6.RELEASE.jar:4.2.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502)[tomcat-embed-core-8.0.33.jar:8.0.33] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458)[tomcat-embed-core-8.0.33.jar:8.0.33] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)[na:1.8.0_91] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)[na:1.8.0_91] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)[tomcat-embed-core-8.0.33.jar:8.0.33] at java.lang.Thread.run(Unknown Source)[na:1.8.0_91]

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