docs: private byte[] createErrorImage(int width, int height, Exception e) throws IOException {
  		String error = e.getMessage();
  		if (null == error) {
  			Writer result = new StringWriter();
  			PrintWriter printWriter = new PrintWriter(result);
  			e.printStackTrace(printWriter);
  			error = result.toString();
  		}
  
  		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
  		Graphics2D g = (Graphics2D) image.getGraphics();
  
  		g.setColor(Color.RED);
  		g.drawString(error, ERROR_MESSAGE_X, height / 2);
  
  		ByteArrayOutputStream out = new ByteArrayOutputStream();
  		ImageIO.write(image, "PNG", out);
  		out.flush();
  		byte[] result = out.toByteArray();
  		out.close();
  
  		return result;
  	}