Update to Drupal 8.2.2. For more information, see https://www.drupal.org/project/drupal/releases/8.2.2

core/lib/Drupal/Core/Utility/LinkGeneratorInterface.php

@@ -31,7 +31,7 @@ interface LinkGeneratorInterface {
    * This keeps the context of the link title ('settings' in the example) for
    * translators.
    *
-   * @param string|array $text
+   * @param string|array|\Drupal\Component\Render\MarkupInterface $text
    *   The link text for the anchor tag as a translated string or render array.
    *   Strings will be sanitized automatically. If you need to output HTML in
    *   the link text, use a render array or an already sanitized string such as