Fatal error: Uncaught Error: Cannot instantiate abstract class Bitrix\Main\Application in /home/bitrix/www/bitrix/modules/main/lib/application.php:102
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/orm/entity.php(707): Bitrix\Main\Application::getInstance()
#1 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(522): Bitrix\Main\ORM\Entity->getConnection()
#2 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(491): Bitrix\Main\ORM\Query\Query->addOrder()
#3 /home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php(450): Bitrix\Main\ORM\Query\Query->setOrder()
#4 /home/bitrix/www/bitrix/modules/main/lib/modulemanager.php(13): Bitrix\Main\ORM\Data\DataManager::getList()
#5 /home/bitrix/www/bitrix/modules/main/lib/loader.php(95): Bitrix\Main\ModuleManager::getInstalledModules()
#6 /home/bitrix/www/bitrix/modules/main/classes/general/module.php(153): Bitrix\Main\Loader::includeModule()
#7 /home/bitrix/www/404.php(7): CModule::IncludeModule()
#8 /home/bitrix/www/bitrix/urlrewrite.php(4): include_once('...')
#9 {main}
thrown in /home/bitrix/www/bitrix/modules/main/lib/application.php on line 102