Fatal error: Uncaught Error: Class 'Bitrix\Main\Loader' not found in /pub/home/soldati/site1/site2/ajax/include_module.php:4 Stack trace: #0 /pub/home/soldati/site1/site2/ajax/include_options.php(7): include_once() #1 {main} thrown in /pub/home/soldati/site1/site2/ajax/include_module.php on line 4