#vulnerable code 
                                private void drawWoodenBoard(Graphics2D g) {
        if (uiConfig.getBoolean("fancy-board")) {
            // fancy version
            int shadowRadius = (int) (boardLength * MARGIN / 6);
            BufferedImage boardImage = theme.getBoard();
            // Support seamless texture
            drawTextureImage(g, boardImage == null ? theme.getBoard() : boardImage, x - 2 * shadowRadius, y - 2 * shadowRadius, boardLength + 4 * shadowRadius, boardLength + 4 * shadowRadius);

            g.setStroke(new BasicStroke(shadowRadius * 2));
            // draw border
            g.setColor(new Color(0, 0, 0, 50));
            g.drawRect(x - shadowRadius, y - shadowRadius, boardLength + 2 * shadowRadius, boardLength + 2 * shadowRadius);
            g.setStroke(new BasicStroke(1));

        } else {
            // simple version
            JSONArray boardColor = uiConfig.getJSONArray("board-color");
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
            g.setColor(new Color(boardColor.getInt(0), boardColor.getInt(1), boardColor.getInt(2)));
            g.fillRect(x, y, boardLength, boardLength);
        }
    } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                private void drawWoodenBoard(Graphics2D g) {
        if (uiConfig.getBoolean("fancy-board")) {
            if  (cachedBoardImage == null) {
                try {
                    cachedBoardImage = ImageIO.read(getClass().getResourceAsStream("/assets/board.png"));
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            int shadowRadius = (int) (boardLength * MARGIN / 6);
            drawTextureImage(g, cachedBoardImage, x - 2 * shadowRadius, y - 2 * shadowRadius, boardLength + 4 * shadowRadius, boardLength + 4 * shadowRadius);

            g.setStroke(new BasicStroke(shadowRadius * 2));
            // draw border
            g.setColor(new Color(0, 0, 0, 50));
            g.drawRect(x - shadowRadius, y - shadowRadius, boardLength + 2 * shadowRadius, boardLength + 2 * shadowRadius);
            g.setStroke(new BasicStroke(1));

        } else {
            JSONArray boardColor = uiConfig.getJSONArray("board-color");
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
            g.setColor(new Color(boardColor.getInt(0), boardColor.getInt(1), boardColor.getInt(2)));
            g.fillRect(x, y, boardLength, boardLength);
        }
    }