Warning: require(Smarty.class.php): failed to open stream: No such file or directory in /home/wwwpro/sites_externes/admin/includes/init.php on line 2

Fatal error: require(): Failed opening required 'Smarty.class.php' (include_path='.:/usr/share/php') in /home/wwwpro/sites_externes/admin/includes/init.php on line 2