Fatal error: Class 'Bitrix\Main\Text\Encoding' not found in F:\Xampp\htdocs\bitrix\modules\main\lib\httprequest.php on line 222

Fatal error: Class 'Bitrix\Main\Diag\ExceptionHandlerLog' not found in F:\Xampp\htdocs\bitrix\modules\main\lib\diag\exceptionhandler.php on line 214