Fatal error: Cannot redeclare class Bitrix\Main\Loader (previously declared in /home/bitrix/web/mango-office.ru/public_html/current/bitrix/modules/main/lib/loader.php:11) in /home/bitrix/web/mango-office.ru/public_html/static_files/mo_core/bitrix/modules/main/lib/loader.php on line 11