HTML to PDF the font-family is not showing in PDF

HTML to PDF the font-family is not showing in PDF
In the MVC view html page there is font-family: ‘Avenir Next LT Pro’;
but in the pdf it shows Times New Roman font. How do I force the pdf to be in font ‘Avenir Next LT Pro’.
Using Aspose.PDF version 20.1.0.0

@LoganJH

This issue may be due to the absence of font in your system. The targeted/desired font should be installed in your system while generating the PDF. Otherwise, API will use a default/alternative font. Also, please share sample HTML file with us if issue still persists. We will test the scenario in our environment and address it accordingly.