Unable to load session snapshot

Hibernate: select sessioninf0_.id as id2_, sessioninf0_.lastModificationDate as lastModi2_2_, sessioninf0_.rulesByteArray as rulesByt3_2_, sessioninf0_.startDate as startDate2_, sessioninf0_.OPTLOCK as OPTLOCK2_ from SessionInfo sessioninf0_ order by sessioninf0_.id desc
Hibernate: select sessioninf0_.id as id2_0_, sessioninf0_.lastModificationDate as lastModi2_2_0_, sessioninf0_.rulesByteArray as rulesByt3_2_0_, sessioninf0_.startDate as startDate2_0_, sessioninf0_.OPTLOCK as OPTLOCK2_0_ from SessionInfo sessioninf0_ where sessioninf0_.id=?
java.lang.IllegalStateException: java.lang.reflect.InvocationTargetException
    at org.drools.persistence.jpa.impl.JPAKnowledgeServiceProviderImpl.buildCommanService(JPAKnowledgeServiceProviderImpl.java:97)
    at org.drools.persistence.jpa.impl.JPAKnowledgeServiceProviderImpl.loadStatefulKnowledgeSession(JPAKnowledgeServiceProviderImpl.java:72)
    at org.drools.persistence.jpa.JPAKnowledgeService.loadStatefulKnowledgeSession(JPAKnowledgeService.java:102)
    at com.roxana.smd.workflow.engine.ProcessEngine.newSession(ProcessEngine.java:252)
    at com.roxana.smd.workflow.engine.ProcessEngine.initilaizeDrools(ProcessEngine.java:133)
    at com.roxana.smd.workflow.engine.ProcessEngine.<init>(ProcessEngine.java:82)
    at com.roxana.smd.workflow.test.EngineTest.setUp(EngineTest.java:30)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
    at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.drools.persistence.jpa.impl.JPAKnowledgeServiceProviderImpl.buildCommanService(JPAKnowledgeServiceProviderImpl.java:85)
    ... 29 more
Caused by: java.lang.RuntimeException: Unable to load session snapshot
    at org.drools.persistence.session.JPASessionMarshallingHelper.loadSnapshot(JPASessionMarshallingHelper.java:112)
    at org.drools.persistence.session.JPASessionMarshallingHelper.<init>(JPASessionMarshallingHelper.java:46)
    at org.drools.persistence.session.SingleSessionCommandService.<init>(SingleSessionCommandService.java:204)
    ... 34 more
Caused by: java.lang.NullPointerException
    at org.drools.common.ConcurrentNodeMemories.getNodeMemory(ConcurrentNodeMemories.java:69)
    at org.drools.common.AbstractWorkingMemory.getNodeMemory(AbstractWorkingMemory.java:1518)
    at org.drools.marshalling.impl.InputMarshaller.readFactHandles(InputMarshaller.java:283)
    at org.drools.marshalling.impl.InputMarshaller.readSession(InputMarshaller.java:183)
    at org.drools.marshalling.impl.DefaultMarshaller.unmarshall(DefaultMarshaller.java:75)
    at org.drools.persistence.session.JPASessionMarshallingHelper.loadSnapshot(JPASessionMarshallingHelper.java:104)
    ... 36 more