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java.lang.NullPointerException: 	at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:76)	at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:118)	at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149)	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1602)	at org.hibernate.jpa.spi.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:210)	at org.hibernate.jpa.internal.EntityManagerImpl.(EntityManagerImpl.java:91)	at org.hibernate.jpa.internal.EntityManagerFactoryImpl.internalCreateEntityManager(EntityManagerFactoryImpl.java:345)	at org.hibernate.jpa.internal.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:338)	at com.sun.enterprise.container.common.impl.EntityManagerWrapper._getDelegate(EntityManagerWrapper.java:197)	at com.sun.enterprise.container.common.impl.EntityManagerWrapper.find(EntityManagerWrapper.java:341)	at fr.rguidoux.smartinvest.entities.crowdlending.ProjectManager.get(ProjectManager.java:14)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)	at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)	at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)	at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:824)	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)	at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:64)	at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:823)	at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)	at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)	at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:823)	at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)	at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)	at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)	at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)	at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)	at com.sun.proxy.$Proxy234.get(Unknown Source)	at fr.rguidoux.smartinvest.entities.crowdlending.__EJB31_Generated__ProjectManager__Intf____Bean__.get(Unknown Source)	at fr.rguidoux.smartinvest.ws.server.services.ProjectWs.get(ProjectWs.java:18)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:205)	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)	at org.glassfish.jersey.internal.Errors.process(Errors.java:315)	at org.glassfish.jersey.internal.Errors.process(Errors.java:297)	at org.glassfish.jersey.internal.Errors.process(Errors.java:267)	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:471)	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425)	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383)	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336)	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223)	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)	at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)	at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)	at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)	at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)	at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)	at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)	at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)	at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)	at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)	at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)	at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)	at java.lang.Thread.run(Thread.java:745)