unable to load simple Lab Entry Module

i have tried to load simple Lab Entry Module. however i ended up with error, after locating and uploading simple Lab Entry Module, OpenMRS WEB Browser became strange error. is there any way to get rid of this error. i wanted Laboratory module, is there any other LAB module available? thanks

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘serviceContext$child#1’ defined in URL [jar:file:/tmp/tomcat7-tomcat7-tmp/1441951959826.openmrs-lib-cache/simplelabentry/simplelabentry.jar!/moduleApplicationContext.xml]: Cannot create inner bean ‘org.springframework.transaction.interceptor.TransactionProxyFactoryBean#1ffab29’ of type [org.springframework.transaction.interceptor.TransactionProxyFactoryBean] while setting bean property ‘moduleService’ with key [1]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.transaction.interceptor.TransactionProxyFactoryBean#1ffab29’ defined in URL [jar:file:/tmp/tomcat7-tomcat7-tmp/1441951959826.openmrs-lib-cache/simplelabentry/simplelabentry.jar!/moduleApplicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/openmrs/api/OrderService$ORDER_STATUS org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:279) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:121) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:350) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:154) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1417) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1158) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) org.openmrs.module.ModuleUtil.refreshApplicationContext(ModuleUtil.java:832) org.openmrs.module.web.WebModuleUtil.refreshWAC(WebModuleUtil.java:962) org.openmrs.module.web.WebModuleUtil.startModule(WebModuleUtil.java:346) org.openmrs.module.web.controller.ModuleListController.onSubmit(ModuleListController.java:177) org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272) org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268) org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855) javax.servlet.http.HttpServlet.service(HttpServlet.java:646) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) javax.servlet.http.HttpServlet.service(HttpServlet.java:727) org.openmrs.module.web.filter.ForcePasswordChangeFilter.doFilter(ForcePasswordChangeFilter.java:61) org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:72) org.openmrs.module.web.filter.ModuleFilter.doFilter(ModuleFilter.java:54) org.openmrs.web.filter.OpenmrsFilter.doFilterInternal(OpenmrsFilter.java:109) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) root cause

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.transaction.interceptor.TransactionProxyFactoryBean#1ffab29’ defined in URL [jar:file:/tmp/tomcat7-tomcat7-tmp/1441951959826.openmrs-lib-cache/simplelabentry/simplelabentry.jar!/moduleApplicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/openmrs/api/OrderService$ORDER_STATUS org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:529) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:269) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:121) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:350) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:154) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1417) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1158) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) org.openmrs.module.ModuleUtil.refreshApplicationContext(ModuleUtil.java:832) org.openmrs.module.web.WebModuleUtil.refreshWAC(WebModuleUtil.java:962) org.openmrs.module.web.WebModuleUtil.startModule(WebModuleUtil.java:346) org.openmrs.module.web.controller.ModuleListController.onSubmit(ModuleListController.java:177) org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272) org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268) org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855) javax.servlet.http.HttpServlet.service(HttpServlet.java:646) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) javax.servlet.http.HttpServlet.service(HttpServlet.java:727) org.openmrs.module.web.filter.ForcePasswordChangeFilter.doFilter(ForcePasswordChangeFilter.java:61) org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:72) org.openmrs.module.web.filter.ModuleFilter.doFilter(ModuleFilter.java:54) org.openmrs.web.filter.OpenmrsFilter.doFilterInternal(OpenmrsFilter.java:109) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) root cause

java.lang.NoClassDefFoundError: org/openmrs/api/OrderService$ORDER_STATUS java.lang.Class.getDeclaredMethods0(Native Method) java.lang.Class.privateGetDeclaredMethods(Class.java:2531) java.lang.Class.getDeclaredMethods(Class.java:1855) org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:387) org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:323) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:870) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:495) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:269) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:121) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1417) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1158) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:269) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:121) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:350) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:154) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1417) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1158) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) org.openmrs.module.ModuleUtil.refreshApplicationContext(ModuleUtil.java:832) org.openmrs.module.web.WebModuleUtil.refreshWAC(WebModuleUtil.java:962) org.openmrs.module.web.WebModuleUtil.startModule(WebModuleUtil.java:346) org.openmrs.module.web.controller.ModuleListController.onSubmit(ModuleListController.java:177) org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272) org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268) org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855) javax.servlet.http.HttpServlet.service(HttpServlet.java:646) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) javax.servlet.http.HttpServlet.service(HttpServlet.java:727) org.openmrs.module.web.filter.ForcePasswordChangeFilter.doFilter(ForcePasswordChangeFilter.java:61) org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:72) org.openmrs.module.web.filter.ModuleFilter.doFilter(ModuleFilter.java:54) org.openmrs.web.filter.OpenmrsFilter.doFilterInternal(OpenmrsFilter.java:109) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) root cause

java.lang.ClassNotFoundException: org.openmrs.api.OrderService$ORDER_STATUS org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569) org.openmrs.module.ModuleClassLoader.loadClass(ModuleClassLoader.java:494) java.lang.ClassLoader.loadClass(ClassLoader.java:358) java.lang.Class.getDeclaredMethods0(Native Method) java.lang.Class.privateGetDeclaredMethods(Class.java:2531) java.lang.Class.getDeclaredMethods(Class.java:1855) org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:387) org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:323) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:870) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:495) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:269) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:121) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1417) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1158) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:269) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:121) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:350) org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:154) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1417) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1158) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) org.openmrs.module.ModuleUtil.refreshApplicationContext(ModuleUtil.java:832) org.openmrs.module.web.WebModuleUtil.refreshWAC(WebModuleUtil.java:962) org.openmrs.module.web.WebModuleUtil.startModule(WebModuleUtil.java:346) org.openmrs.module.web.controller.ModuleListController.onSubmit(ModuleListController.java:177) org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272) org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268) org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855) javax.servlet.http.HttpServlet.service(HttpServlet.java:646) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) javax.servlet.http.HttpServlet.service(HttpServlet.java:727) org.openmrs.module.web.filter.ForcePasswordChangeFilter.doFilter(ForcePasswordChangeFilter.java:61) org.openmrs.module.web.filter.ModuleFilterChain.doFilter(ModuleFilterChain.java:72) org.openmrs.module.web.filter.ModuleFilter.doFilter(ModuleFilter.java:54) org.openmrs.web.filter.OpenmrsFilter.doFilterInternal(OpenmrsFilter.java:109) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.openmrs.web.filter.StartupFilter.doFilter(StartupFilter.java:105) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.52 (Ubuntu) logs.