#fixed code
                                @Override
    public DataFrame<R, String> read(Consumer<DbSourceOptions<R>> configurator) throws DataFrameException {
        final DbSourceOptions<R> options = initOptions(new DbSourceOptions<>(), configurator);
        try (Connection conn = options.getConnection()) {
            conn.setAutoCommit(options.isAutoCommit());
            conn.setReadOnly(options.isReadOnly());
            final int fetchSize = options.getFetchSize().orElse(1000);
            final SQL sql = SQL.of(options.getSql(), options.getParameters().orElse(new Object[0]));
            return sql.executeQuery(conn, fetchSize, rs -> read(rs, options));
        } catch (Exception ex) {
            throw new DataFrameException("Failed to create DataFrame from database request: " + options, ex);
        }
    }
#vulnerable code 
                                @Override
    public DataFrame<R, String> read(Consumer<DbSourceOptions<R>> configurator) throws DataFrameException {
        final DbSourceOptions<R> options = initOptions(new DbSourceOptions<>(), configurator);
        try (Connection conn = options.getConnection()) {
            final SQL sql = SQL.of(options.getSql(), options.getParameters().orElse(new Object[0]));
            return sql.executeQuery(conn, rs -> read(rs, options));
        } catch (Exception ex) {
            throw new DataFrameException("Failed to create DataFrame from database request: " + options, ex);
        }
    } 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE