Fatal error: Uncaught Error: Class "Bitrix\Main\Loader" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\im\install\templates\desktop_app\footer.php:4 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\im\install\templates\desktop_app\footer.php on line 4