Update to Drupal 8.2.0. For more information, see https://www.drupal.org/project/drupal/releases/8.2.0

core/lib/Drupal/Core/GeneratedNoLink.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Drupal\Core;
+
+/**
+ * This class holds a <span> generated from the <nolink> route.
+ */
+class GeneratedNoLink extends GeneratedLink {
+
+  /**
+   * {@inheritdoc}
+   */
+  const TAG = 'span';
+
+}