Issue #3191218: WSOD with Route "view.taxonomy_term.feed_1" does not exist

src/Plugin/Sitemap/Vocabulary.php

@@ -339,7 +339,7 @@ class Vocabulary extends SitemapBase {
     if ($rssDepth && isset($term->treeDepth) && $rssDepth >= $term->treeDepth) {
       // Route validation will be provided on form save and config update,
       // rather than every time a link is created.
-      if (isset($this->settings['rss_link'])) {
+      if ($this->settings['enable_rss'] && !empty($this->settings['rss_link'])) {
         return $this->buildLink($this->settings['rss_link'], $term->tid);
       }
     }