SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngine' defined in ServletContext resource [/WEB-INF/classes/jbpm4-context.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [protected org.jbpm.api.ProcessEngine org.jbpm.pvm.internal.processengine.SpringHelper.createProcessEngine()] threw exception; nested exception is org.hibernate.MappingException: Unknown entity: org.jbpm.pvm.internal.id.PropertyImpl      at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:423)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:901)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:815)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)      at java.security.AccessController.doPrivileged(Native Method)      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:217)      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)      at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)      at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)      at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)      at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3830)      at org.apache.catalina.core.StandardContext.start(StandardContext.java:4337)      at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)      at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)      at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)      at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)      at org.apache.catalina.core.StandardService.start(StandardService.java:516)      at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)      at org.apache.catalina.startup.Catalina.start(Catalina.java:566)      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)      at java.lang.reflect.Method.invoke(Unknown Source)      at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)      at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [protected org.jbpm.api.ProcessEngine org.jbpm.pvm.internal.processengine.SpringHelper.createProcessEngine()] threw exception; nested exception is org.hibernate.MappingException: Unknown entity: org.jbpm.pvm.internal.id.PropertyImpl      at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:127)      at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:414)      ... 32 more Caused by: org.hibernate.MappingException: Unknown entity: org.jbpm.pvm.internal.id.PropertyImpl      at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:580)      at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1365)      at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)      at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)      at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)      at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)      at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)      at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)      at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:562)      at org.hibernate.impl.SessionImpl.save(SessionImpl.java:550)      at org.hibernate.impl.SessionImpl.save(SessionImpl.java:546)      at org.jbpm.pvm.internal.id.PropertyImpl.setPropertyValue(PropertyImpl.java:178)      at org.jbpm.pvm.internal.id.PropertyImpl.setNextDbid(PropertyImpl.java:85)      at org.jbpm.pvm.internal.cmd.CheckDbCmd.execute(CheckDbCmd.java:63)      at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)      at org.jbpm.pvm.internal.tx.SpringCommandCallback.doInTransaction(SpringCommandCallback.java:45)      at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)      at org.jbpm.pvm.internal.tx.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:55)      at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)      at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)      at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)      at org.jbpm.pvm.internal.processengine.ProcessEngineImpl.checkDb(ProcessEngineImpl.java:152)      at org.jbpm.pvm.internal.processengine.SpringProcessEngine.create(SpringProcessEngine.java:70)      at org.jbpm.pvm.internal.cfg.ConfigurationImpl.buildProcessEngine(ConfigurationImpl.java:92)      at org.jbpm.pvm.internal.processengine.SpringHelper.createProcessEngine(SpringHelper.java:47)      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)      at java.lang.reflect.Method.invoke(Unknown Source)      at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:115)      ... 33 more