Warning: require_once(../head.php): failed to open stream: No such file or directory in C:\Web\htdocs\recta\customers\mac\backend\ipn\conf_levels.php on line 8

Fatal error: require_once(): Failed opening required '../head.php' (include_path='C:\xampp\php\PEAR') in C:\Web\htdocs\recta\customers\mac\backend\ipn\conf_levels.php on line 8