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java.lang.NullPointerException at org.mule.module.db.internal.domain.connection.DefaultDbConnection.isClosed(DefaultDbConnection.java:99) at org.mule.module.db.internal.domain.connection.TransactionalDbConnectionFactory.releaseConnection(TransactionalDbConnectionFactory.java:150) at org.mule.module.db.internal.processor.AbstractDbMessageProcessor.process(AbstractDbMessageProcessor.java:87)