Fatal error: Uncaught Error: Call to undefined function Bitrix\Main\Composite\mb_strlen() in /workspace/sites/santehnika-i-plitka.ru/bitrix/modules/main/lib/composite/helper.php:178 Stack trace: #0 /workspace/sites/santehnika-i-plitka.ru/bitrix/modules/main/lib/composite/responder.php(60): Bitrix\Main\Composite\Helper::isBitrixFolder() #1 /workspace/sites/santehnika-i-plitka.ru/bitrix/modules/main/lib/composite/responder.php(28): Bitrix\Main\Composite\Responder::isValidRequest() #2 /workspace/sites/santehnika-i-plitka.ru/bitrix/modules/main/include/prolog.php(7): Bitrix\Main\Composite\Responder::respond() #3 /workspace/sites/santehnika-i-plitka.ru/bitrix/header.php(1): require_once('/workspace/site...') #4 /workspace/sites/santehnika-i-plitka.ru/catalog/3d-konstruktor.php(2): require('/workspace/site...') #5 {main} thrown in /workspace/sites/santehnika-i-plitka.ru/bitrix/modules/main/lib/composite/helper.php on line 178