#vulnerable code 
                                protected static void setTxnConfigs() throws IOException {
        TransactionFactory.getTransactionFactory().getTransactionContext().setTxnConfigs(config, tmpFolder.newFolder().getAbsolutePath(), DEFAULT_TXN_TIMEOUT_SECONDS);
    } 
                            #location 2 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                protected static void setTxnConfigs() throws IOException {
        TransactionFactory.getTransactionProvider().getTransactionContext().setTxnConfigs(config, tmpFolder.newFolder().getAbsolutePath(), DEFAULT_TXN_TIMEOUT_SECONDS);
    }