Update functions.php

system/includes/functions.php

@@ -1845,6 +1845,7 @@ function has_prev($prev)
             'audio' => $prev->audio,
             'quote' => $prev->quote,
             'link' => $prev->link,
+            'slug' => $prev->slug,
             'category' => $prev->category,
             'categoryUrl' => $prev->categoryUrl,
             'categoryCount' => $prev->categoryCount,
@@ -1882,6 +1883,7 @@ function has_next($next)
             'audio' => $next->audio,
             'quote' => $next->quote,
             'link' => $next->link,
+            'slug' => $next->slug,
             'category' => $next->category,
             'categoryUrl' => $next->categoryUrl,
             'categoryCount' => $next->categoryCount,