Fatal error: Uncaught Error: Class "Bitrix\Calendar\Sync\Builders\BuilderConnection" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\calendar\lib\sync\builders\builderconnectionfromarray.php:17 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\calendar\lib\sync\builders\builderconnectionfromarray.php on line 17