Issue #3191218 by MegaChriz, Anybody, freelock, akalata: WSOD with Route...

Issue #3191218 by MegaChriz, Anybody, freelock, akalata: 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);
       }
     }

src/Tests/SitemapTaxonomyTest.php

@@ -112,4 +112,36 @@ class SitemapTaxonomyTest extends SitemapTaxonomyTestBase {
     $this->drupalGet('/admin/config/search/sitemap');
   }
 
+  /**
+   * Tests if the sitemap loads correctly after the taxonomy view gets disabled.
+   */
+  public function testWithDisabledTaxonomyView() {
+    // Enable the Views module.
+    $this->container->get('module_installer')
+      ->install(['views']);
+
+    // Create taxonomy terms.
+    $this->createTerms($this->vocabulary);
+
+    // Ensure that the sitemap gets loaded correctly.
+    $this->drupalGet('/sitemap');
+    $elements = $this->cssSelect(".sitemap-plugin--vocabulary");
+    $this->assertEqual(count($elements), 1, 'Vocabulary found.');
+
+    // Now disable the taxonomy view.
+    $this->container->get('entity_type.manager')
+      ->getStorage('view')
+      ->load('taxonomy_term')
+      ->setStatus(FALSE)
+      ->save();
+
+    // Flush cache to regenerate the sitemap.
+    drupal_flush_all_caches();
+
+    // And visit the sitemap again.
+    $this->drupalGet('/sitemap');
+    $elements = $this->cssSelect(".sitemap-plugin--vocabulary");
+    $this->assertEqual(count($elements), 1, 'Vocabulary found.');
+  }
+
 }