Plesk panel hacked access

Notice: Undefined property: Control::$sitemap.xml in /var/www/html/orenoaikagi/index.php on line 75

Fatal error: Uncaught Error: Call to a member function () on null in /var/www/html/orenoaikagi/index.php:75 Stack trace: #0 {main} thrown in /var/www/html/orenoaikagi/index.php on line 75