comparison core/includes/theme.maintenance.inc @ 5:12f9dff5fda9 tip

Update to Drupal core 8.7.1

   // installed, retrieve all available themes.
   /** @var \Drupal\Core\Theme\ThemeInitialization $theme_init */
   $theme_init = \Drupal::service('theme.initialization');
   $theme_handler = \Drupal::service('theme_handler');
   if (empty($themes) || !isset($themes[$custom_theme])) {
-    $themes = $theme_handler->rebuildThemeData();
+    $themes = \Drupal::service('extension.list.theme')->getList();
     $theme_handler->addTheme($themes[$custom_theme]);
   }
 
   // \Drupal\Core\Extension\ThemeHandlerInterface::listInfo() triggers a
   // \Drupal\Core\Extension\ModuleHandler::alter() in maintenance mode, but we