Fatal error: Uncaught Error: Call to undefined method Bitrix\Main\Loader::getDocumentRoot() in /home/bitrix/www/bitrix/modules/main/lib/config/configuration.php:96
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/config/configuration.php(221): Bitrix\Main\Config\Configuration->loadConfiguration()
#1 /home/bitrix/www/bitrix/modules/main/lib/di/servicelocator.php(92): Bitrix\Main\Config\Configuration->offsetExists()
#2 /home/bitrix/www/bitrix/modules/main/lib/application.php(83): Bitrix\Main\DI\ServiceLocator->registerByGlobalSettings()
#3 /home/bitrix/www/bitrix/modules/main/lib/application.php(99): Bitrix\Main\Application->__construct()
#4 /home/bitrix/www/bitrix/modules/main/start.php(32): Bitrix\Main\Application::getInstance()
#5 /home/bitrix/www/bitrix/modules/main/include.php(14): require_once('...')
#6 /home/bitrix/www/bitrix/modules/main/include/prolog_before.php(10): require_once('...')
#7 /home/bitrix/www/bitrix/modules/main/include/prolog.php(10): require_once('...')
#8 /home/bitrix/www/bitrix/header.php(1): require_once('...')
#9 /home/bitrix/www/index.php(2): require('...')
#10 {main}
thrown in /home/bitrix/www/bitrix/modules/main/lib/config/configuration.php on line 96