i18n_menu_translated_tree() in drupal 7,fatal error-Collection of common programming errors

Fatal error: Call to undefined function i18n_menu_translated_tree() in C:\xampp\htdocs\drupal\sites\all\themes\business\templates\page–front.tpl.php on line 87

my code is

I installed xmlsitemap module and got this error. Any help will be great 😀