diff -u b/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
--- b/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -308,8 +308,8 @@
   }
 
   // Adds RDFa markup annotating the number of comments a node has.
-  $comment_count_mapping = $mapping->getPreparedFieldMapping('comment_count');
-  if (\Drupal::moduleHandler()->moduleExists('comment')) {
+  if (\Drupal::moduleHandler()->moduleExists('comment') && \Drupal::currentUser()->hasPermission('access comments')) {
+    $comment_count_mapping = $mapping->getPreparedFieldMapping('comment_count');
     if (!empty($comment_count_mapping['properties'])) {
       $fields = array_keys(\Drupal::service('comment.manager')->getFields('node'));
       $definitions = array_keys($variables['node']->getPropertyDefinitions());
only in patch2:
unchanged:
--- a/core/modules/rdf/lib/Drupal/rdf/Tests/CommentAttributesTest.php
+++ b/core/modules/rdf/lib/Drupal/rdf/Tests/CommentAttributesTest.php
@@ -125,9 +125,6 @@ public function testNumberOfCommentsRdfaMarkup() {
       'datatype' => 'http://www.w3.org/2001/XMLSchema#integer',
     );
     $this->assertTrue($graph->hasProperty($this->node_uri, 'http://rdfs.org/sioc/ns#num_replies', $expected_value), 'Number of comments found in RDF output of teaser view (sioc:num_replies).');
-    // Makes sure we don't generate the wrong statement for number of comments.
-    $node_comments_uri = url('node/' . $this->node->id(), array('fragment' => 'comments', 'absolute' => TRUE));
-    $this->assertFalse($graph->hasProperty($node_comments_uri, 'http://rdfs.org/sioc/ns#num_replies', $expected_value), 'Number of comments found in RDF output of teaser view mode (sioc:num_replies).');
 
     // Tests number of comments in full node view, expected value is the same.
     $parser = new \EasyRdf_Parser_Rdfa();