HTML to PDF Conversion Error

I am using Aspose Total for Java SDK to convert files.
When converting the attached Html file to pdf, I am getting the following error:

class com.aspose.pdf.internal.p344.z10: Value cannot be null.
Parameter name: rawHtml
com.aspose.pdf.internal.p225.z2.m1(Unknown Source)
com.aspose.pdf.internal.p211.z4.m2(Unknown Source)
com.aspose.pdf.internal.p211.z5.m1(Unknown Source)
com.aspose.pdf.internal.p211.z4.m3(Unknown Source)
com.aspose.pdf.internal.p211.z4.m3(Unknown Source)
com.aspose.pdf.internal.p211.z4.m1(Unknown Source)
com.aspose.pdf.internal.p211.z4.m1(Unknown Source)
com.aspose.pdf.internal.p214.z1.m1(Unknown Source)
com.aspose.pdf.z30.m1(Unknown Source)
com.aspose.pdf.ADocument.m1(Unknown Source)
com.aspose.pdf.ADocument.<init>(Unknown Source)
com.aspose.pdf.Document.<init>(Unknown Source)

Please let me know how to resolve this issue.
Thanks.