issue in converting pdf to html

Exception message:
Exception in thread "main" java.lang.ExceptionInInitializerError
    at com.aspose.pdf.internal.p99.z33.m1(Unknown Source)
    at com.aspose.pdf.internal.p40.z13.m1(Unknown Source)
    at com.aspose.pdf.internal.p40.z13.m1(Unknown Source)
    at com.aspose.pdf.internal.p40.z8.m1(Unknown Source)
    at com.aspose.pdf.internal.p40.z1.m1(Unknown Source)
    at com.aspose.pdf.internal.p39.z2.m1(Unknown Source)
    at com.aspose.pdf.internal.p218.z7.m1(Unknown Source)
    at com.aspose.pdf.z77.m1(Unknown Source)
    at com.aspose.pdf.ADocument.save(Unknown Source)
    at com.aspose.pdf.Document.save(Unknown Source)
    at convertPdf.main(convertPdf.java:32)
Caused by: class com.aspose.pdf.internal.p235.z9: FontFamily 'Courier New' not found
Parameter name: Courier New
com.aspose.pdf.internal.p243.z16.<init>(Unknown Source)
com.aspose.pdf.internal.p248.z1.m1(Unknown Source)
com.aspose.pdf.internal.p147.z10.<clinit>(Unknown Source)
com.aspose.pdf.internal.p99.z33.m1(Unknown Source)
com.aspose.pdf.internal.p40.z13.m1(Unknown Source)
com.aspose.pdf.internal.p40.z13.m1(Unknown Source)
com.aspose.pdf.internal.p40.z8.m1(Unknown Source)
com.aspose.pdf.internal.p40.z1.m1(Unknown Source)
com.aspose.pdf.internal.p39.z2.m1(Unknown Source)
com.aspose.pdf.internal.p218.z7.m1(Unknown Source)
com.aspose.pdf.z77.m1(Unknown Source)
com.aspose.pdf.ADocument.save(Unknown Source)
com.aspose.pdf.Document.save(Unknown Source)
convertPdf.main(convertPdf.java:32)
    at com.aspose.pdf.internal.p243.z16.<init>(Unknown Source)
    at com.aspose.pdf.internal.p248.z1.m1(Unknown Source)
    at com.aspose.pdf.internal.p147.z10.<clinit>(Unknown Source)
    ... 11 more



Exception in thread "main" com.aspose.ms.System.IO.FileNotFoundException: File not found File: /usr/share/fonts/liberation/LiberationSans-Regular.ttf
File name: '/usr/share/fonts/liberation/LiberationSans-Regular.ttf' ---> /usr/share/fonts/liberation/LiberationSans-Regular.ttf (Too many open files)
com.aspose.pdf.internal.p332.z3.<init>(Unknown Source)
com.aspose.pdf.internal.p332.z3.<init>(Unknown Source)
com.aspose.pdf.internal.p332.z3.<init>(Unknown Source)
com.aspose.pdf.internal.p250.z28.<init>(Unknown Source)
com.aspose.pdf.internal.p250.z28.<init>(Unknown Source)
com.aspose.pdf.internal.p250.z28.<init>(Unknown Source)
com.aspose.pdf.internal.p250.z14.m6(Unknown Source)
com.aspose.pdf.internal.p98.z146.getFontStreamInternal(Unknown Source)
com.aspose.pdf.internal.p98.z146.getFontStream(Unknown Source)
com.aspose.pdf.internal.p466.z29.m27(Unknown Source)
com.aspose.pdf.internal.p455.z1.m1(Unknown Source)
com.aspose.pdf.internal.p455.z5.m1(Unknown Source)
com.aspose.pdf.internal.p445.z13.m3(Unknown Source)
com.aspose.pdf.internal.p445.z13.m4(Unknown Source)
com.aspose.pdf.internal.p445.z13.m2(Unknown Source)
com.aspose.pdf.internal.p445.z13.m2(Unknown Source)
com.aspose.pdf.ApsUsingConverter.m1(Unknown Source)
com.aspose.pdf.z77.m1(Unknown Source)
com.aspose.pdf.ADocument.save(Unknown Source)
com.aspose.pdf.Document.save(Unknown Source)
convertPdf.main(convertPdf.java:32)
    at com.aspose.pdf.internal.p332.z3.<init>(Unknown Source)
    at com.aspose.pdf.internal.p332.z3.<init>(Unknown Source)
    at com.aspose.pdf.internal.p332.z3.<init>(Unknown Source)
    at com.aspose.pdf.internal.p250.z28.<init>(Unknown Source)
    at com.aspose.pdf.internal.p250.z28.<init>(Unknown Source)
    at com.aspose.pdf.internal.p250.z28.<init>(Unknown Source)
    at com.aspose.pdf.internal.p250.z14.m6(Unknown Source)
    at com.aspose.pdf.internal.p98.z146.getFontStreamInternal(Unknown Source)
    at com.aspose.pdf.internal.p98.z146.getFontStream(Unknown Source)
    at com.aspose.pdf.internal.p466.z29.m27(Unknown Source)
    at com.aspose.pdf.internal.p455.z1.m1(Unknown Source)
    at com.aspose.pdf.internal.p455.z5.m1(Unknown Source)
    at com.aspose.pdf.internal.p445.z13.m3(Unknown Source)
    at com.aspose.pdf.internal.p445.z13.m4(Unknown Source)
    at com.aspose.pdf.internal.p445.z13.m2(Unknown Source)
    at com.aspose.pdf.internal.p445.z13.m2(Unknown Source)
    at com.aspose.pdf.ApsUsingConverter.m1(Unknown Source)
    at com.aspose.pdf.z77.m1(Unknown Source)
    at com.aspose.pdf.ADocument.save(Unknown Source)
    at com.aspose.pdf.Document.save(Unknown Source)
    at convertPdf.main(convertPdf.java:32)
Caused by: java.io.FileNotFoundException: /usr/share/fonts/liberation/LiberationSans-Regular.ttf (Too many open files)
    at java.io.RandomAccessFile.open(Native Method)
    at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212)
    at java.io.RandomAccessFile.<init>(RandomAccessFile.java:98)
    ... 21 more

[Java]

//package loadingandsaving.loadingandsavinghtml.word2help.java;

import java.io.File;

import com.aspose.pdf.Document;

import com.aspose.pdf.HtmlSaveOptions;

import com.aspose.pdf.LettersPositioningMethods;

public class convertPdf {

    public static void main(String[] args) throws Exception {

        // TODO Auto-generated method stub

        String inputFile = args[0];

        String outputFile = args[1];

        String dataDir = "/home/madhur/workspace2/aspose_test/src/word2help/java/Data/";

        // /////////////////

        Document doc = new Document(inputFile);

        // Instantiate HTML Save options object

        HtmlSaveOptions newOptions = new HtmlSaveOptions();

        // Enable option to embed all resources inside the HTML

        newOptions.PartsEmbeddingMode = HtmlSaveOptions.PartsEmbeddingModes.EmbedAllIntoHtml;

        // This is just optimization for IE and can be omitted

        newOptions.LettersPositioningMethod = LettersPositioningMethods.UseEmUnitsAndCompensationOfRoundingErrorsInCss;

        newOptions.RasterImagesSavingMode = HtmlSaveOptions.RasterImagesSavingModes.AsEmbeddedPartsOfPngPageBackground;

        newOptions.FontSavingMode = HtmlSaveOptions.FontSavingModes.SaveInAllFormats;

        // Output file path

        doc.save(outputFile, newOptions);

        // //////////

        // Document doc = new Document(dataDir + "pdf.pdf");

        // doc.save(dataDir + "pdf.html");

        System.out.println("Conversion completed successfully.");

    }

}