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    java.lang.NullPointerException
        at org.opentools.minerva.connector.jdbc.JDBCLocalTransaction.rollback(JDBCLocalTransaction.java:57)
        at org.opentools.minerva.connector.BaseConnectionManager$SharedLocalConnectionListener.afterCompletion(BaseConnectionManager.java:389)
        at org.apache.geronimo.transaction.manager.TransactionImpl.afterCompletion(TransactionImpl.java:537)
        at org.apache.geronimo.transaction.manager.TransactionImpl.rollback(TransactionImpl.java:489)
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