ClassCastException when serializing session

java.lang.ClassCastException: class java.lang.String cannot be cast to class org.drools.core.reteoo.AccumulateNode$AccumulateContext (java.lang.String is in module java.base of loader 'bootstrap'; org.drools.core.reteoo.AccumulateNode$AccumulateContext is in unnamed module of loader 'app')
	at org.drools.core.common.PhreakActivationIterator.collectFromPeers(PhreakActivationIterator.java:219)

[ERROR] testFamilyRulesSerialization[pessimistic](org.drools.persistence.kie.persistence.session.JpaPersistentStatefulSessionTest)  Time elapsed: 0.264 s  <<< ERROR!
java.lang.RuntimeException: Unable to commit transaction
	at org.drools.persistence.jta.JtaTransactionManager.commit(JtaTransactionManager.java:249)
	at org.drools.persistence.PersistableRunner$TransactionInterceptor.execute(PersistableRunner.java:611)
	at org.drools.persistence.PersistableRunner$TransactionInterceptor.execute(PersistableRunner.java:568)
	at org.drools.persistence.PersistableRunner.execute(PersistableRunner.java:400)
	at org.drools.persistence.PersistableRunner.execute(PersistableRunner.java:68)
	at org.drools.core.runtime.InternalLocalRunner.execute(InternalLocalRunner.java:37)
	at org.drools.core.runtime.InternalLocalRunner.execute(InternalLocalRunner.java:41)
	at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.execute(CommandBasedStatefulKnowledgeSession.java:544)
	at org.drools.persistence.kie.persistence.session.JpaPersistentStatefulSessionTest.testFamilyRulesSerialization(JpaPersistentStatefulSessionTest.java:568)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
Caused by: javax.transaction.RollbackException: ARJUNA016053: Could not commit transaction.
	at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1300)
	at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:126)
	at org.drools.persistence.jta.JtaTransactionManager.commit(JtaTransactionManager.java:246)
	... 46 more
Caused by: java.lang.ClassCastException: class java.lang.String cannot be cast to class org.drools.core.reteoo.AccumulateNode$AccumulateContext (java.lang.String is in module java.base of loader 'bootstrap'; org.drools.core.reteoo.AccumulateNode$AccumulateContext is in unnamed module of loader 'app')
	at org.drools.core.common.PhreakActivationIterator.collectFromPeers(PhreakActivationIterator.java:219)
	at org.drools.core.common.PhreakActivationIterator.collectFromLeftInput(PhreakActivationIterator.java:212)
	at org.drools.core.common.PhreakActivationIterator.collectFromPeers(PhreakActivationIterator.java:226)
	at org.drools.core.common.PhreakActivationIterator.collectFromLeftInput(PhreakActivationIterator.java:212)
	at org.drools.core.common.PhreakActivationIterator.collectFromPeers(PhreakActivationIterator.java:226)
	at org.drools.core.common.PhreakActivationIterator.collectFromLeftInput(PhreakActivationIterator.java:212)
	at org.drools.core.common.PhreakActivationIterator.collectFromPeers(PhreakActivationIterator.java:226)
	at org.drools.core.common.PhreakActivationIterator.collectFromLeftInput(PhreakActivationIterator.java:212)
	at org.drools.core.common.PhreakActivationIterator.lambda$processLeftTuples$0(PhreakActivationIterator.java:204)
	at org.drools.core.common.DefaultFactHandle$SingleLinkedTuples.forEachLeftTuple(DefaultFactHandle.java:739)
	at org.drools.core.common.DefaultFactHandle.forEachLeftTuple(DefaultFactHandle.java:935)
	at org.drools.core.common.PhreakActivationIterator.processLeftTuples(PhreakActivationIterator.java:202)
	at org.drools.core.common.PhreakActivationIterator.collectAgendaItems(PhreakActivationIterator.java:112)
	at org.drools.core.common.PhreakActivationIterator.<init>(PhreakActivationIterator.java:63)
	at org.drools.core.common.PhreakActivationIterator.iterator(PhreakActivationIterator.java:70)
	at org.drools.core.common.ActivationIterator.iterator(ActivationIterator.java:62)
	at org.drools.serialization.protobuf.ProtobufOutputMarshaller.writeAgenda(ProtobufOutputMarshaller.java:333)
	at org.drools.serialization.protobuf.ProtobufOutputMarshaller.serializeSession(ProtobufOutputMarshaller.java:159)
	at org.drools.serialization.protobuf.ProtobufOutputMarshaller.writeSession(ProtobufOutputMarshaller.java:117)
	at org.drools.serialization.protobuf.ProtobufMarshaller.marshall(ProtobufMarshaller.java:123)
	at org.drools.serialization.protobuf.ProtobufMarshaller.marshall(ProtobufMarshaller.java:107)
	at org.drools.persistence.api.SessionMarshallingHelper.getSnapshot(SessionMarshallingHelper.java:78)
	at org.drools.persistence.info.SessionInfo.transform(SessionInfo.java:98)
	at org.drools.persistence.TriggerUpdateTransactionSynchronization.beforeCompletion(TriggerUpdateTransactionSynchronization.java:61)
	at org.drools.persistence.jta.JtaTransactionSynchronizationAdapter.beforeCompletion(JtaTransactionSynchronizationAdapter.java:54)
	at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:76)
	at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:360)
	at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:91)
	at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:162)
	at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1288)
	... 48 more