org.drools.persistence.jta.JtaTransactionManager: Unable to commit transaction
! bitronix.tm.internal.BitronixRollbackException: RuntimeException thrown during beforeCompletion cycle caused transaction rollback
! at bitronix.tm.BitronixTransaction.commit(BitronixTransaction.java:241) ~[btm-2.1.4.jar:2.1.4]
! at bitronix.tm.BitronixTransactionManager.commit(BitronixTransactionManager.java:143) ~[btm-2.1.4.jar:2.1.4]
! at org.drools.persistence.jta.JtaTransactionManager.commit(JtaTransactionManager.java:209) ~[drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:512) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:73) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.persistence.jta.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:60) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:353) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]
! at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcessInstance(CommandBasedStatefulKnowledgeSession.java:244) [drools-core-6.1.0.Final.jar:6.1.0.Final]