refs #16301 [master] bugfix in URL rewrite

* filter out empty links

module/finc/src/finc/View/Helper/Root/Record.php

@@ -309,7 +309,7 @@ class Record extends \VuFind\View\Helper\Root\Record
             $link = $this->rewriteLink($link);
         }
 
-        return $links;
+        return array_filter($links);
     }
 
     /**