diff -u b/core/includes/install.core.inc b/core/includes/install.core.inc
--- b/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1907,7 +1907,7 @@
       'title'       => t('Internet'),
       'value'       => t('The translation server is offline.'),
       'severity'    => REQUIREMENT_ERROR,
-      'description' => t('The installer requires to contact the translation server to download a translation file. Check your internet connection and verify that your website can reach the translation server at <a href=":server_url">!server_url</a>.', array(':server_url' => $server_url, '!server_url' => $server_url)),
+      'description' => t('The installer requires to contact the translation server to download a translation file. Check your internet connection and verify that your website can reach the translation server at <a href=":server_url">@server_url</a>.', array(':server_url' => $server_url, '@server_url' => $server_url)),
     );
   }
   else {
diff -u b/core/modules/responsive_image/src/ResponsiveImageStyleForm.php b/core/modules/responsive_image/src/ResponsiveImageStyleForm.php
--- b/core/modules/responsive_image/src/ResponsiveImageStyleForm.php
+++ b/core/modules/responsive_image/src/ResponsiveImageStyleForm.php
@@ -118,7 +118,7 @@
         );
         $image_style_mapping = $responsive_image_style->getImageStyleMapping($breakpoint_id, $multiplier);
         if (\Drupal::moduleHandler()->moduleExists('help')) {
-          $description = $this->t('See the <a href=":responsive_image_help">Responsive Image help page</a> for information on the sizes attribute.', array(':responsive_image_help' => (\Drupal::url('help.page', array('name' => 'responsive_image')))));
+          $description = $this->t('See the <a href=":responsive_image_help">Responsive Image help page</a> for information on the sizes attribute.', array(':responsive_image_help' => \Drupal::url('help.page', array('name' => 'responsive_image'))));
         }
         else {
           $description = $this->t('Enable the Help module for more information on the sizes attribute.');
diff -u b/core/modules/system/src/Form/CronForm.php b/core/modules/system/src/Form/CronForm.php
--- b/core/modules/system/src/Form/CronForm.php
+++ b/core/modules/system/src/Form/CronForm.php
@@ -106,8 +106,9 @@
       '#markup' => $status,
     );
 
+    $cron_url = $this->url('system.cron', array('key' => $this->state->get('system.cron_key')), array('absolute' => TRUE)); 
     $form['cron_url'] = array(
-      '#markup' => '<p>' . t('To run cron from outside the site, go to <a href=":cron">!cron</a>', array(':cron' => $this->url('system.cron', array('key' => $this->state->get('system.cron_key')), array('absolute' => TRUE)))) . '</p>',
+      '#markup' => '<p>' . t('To run cron from outside the site, go to <a href=":cron">@cron</a>', array(':cron' => $cron_url, '@cron' => $cron_url) . '</p>',
     );
 
     $form['cron'] = array(