Show only Category title, but not duplicates

Hello,

I am trying to show the popular categories in the main nav of the website.

wpp_get_mostpopular('stats_category=1&limit=20&post_html="<li>{category}</li>"');

This shows the links correctly, but I only want to show a category once.

This shows multiple categoys..

So for examples… this shows..

<!-- WordPress Popular Posts Plugin v3.3.3 [PHP] [daily] [views] [custom] -->

<ul class="wpp-list">

<li><a href="#">Gaming</a></li>
<li><a href="#">Travel</a></li>
<li><a href="#">Technology</a></li>
<li><a href="#">Gaming</a></li>
<li><a href="#">Health</a></li>
<li><a href="#">Technology</a></li>
<li><a href="#">Gaming</a></li>
<li><a href="#">Business</a></li>
<li><a href="#">Travel</a></li>
<li><a href="#">Health</a></li>
<li><a href="#">Art</a></li>
<li><a href="#">Business</a></li>
<li><a href="#">Zz.Sticky</a></li>
<li><a href="#">Food</a></li>
<li><a href="#">Food</a></li>
<li><a href="#">Marijuana</a></li>
<li><a href="#">Travel</a></li>
<li><a href="#">Culture</a></li>
<li><a href="#">Culture</a></li>
<li><a href="#">Art</a></li>
<!-- End WordPress Popular Posts Plugin v3.3.3 -->

I want it to only show

<!-- WordPress Popular Posts Plugin v3.3.3 [PHP] [daily] [views] [custom] -->

<ul class="wpp-list">

<li><a href="#">Gaming</a></li>
<li><a href="#">Travel</a></li>
<li><a href="#">Technology</a></li>
<li><a href="#">Health</a></li>
<li><a href="#">Business</a></li>
<li><a href="#">Art</a></li>
<li><a href="#">Zz.Sticky</a></li>
<li><a href="#">Food</a></li>
<li><a href="#">Marijuana</a></li>
<li><a href="#">Culture</a></li>
<!-- End WordPress Popular Posts Plugin v3.3.3 -->

Can this be done? Thanks!

https://wordpress.org/plugins/wordpress-popular-posts/