[Bitrix\Main\SystemException] 
Invalid value for QueryChainElement: . (0)
/var/www/html/bitrix/modules/main/lib/orm/query/chainelement.php:65
#0: Bitrix\Main\ORM\Query\ChainElement->__construct
	/var/www/html/bitrix/modules/main/lib/orm/query/chain.php:269
#1: Bitrix\Main\ORM\Query\Chain::getChainByDefinition
	/var/www/html/bitrix/modules/main/lib/orm/query/query.php:3498
#2: Bitrix\Main\ORM\Query\Query->getRegisteredChain
	/var/www/html/bitrix/modules/main/lib/orm/query/query.php:1231
#3: Bitrix\Main\ORM\Query\Query->addToSelectChain
	/var/www/html/bitrix/modules/main/lib/orm/query/query.php:2465
#4: Bitrix\Main\ORM\Query\Query->buildQuery
	/var/www/html/bitrix/modules/main/lib/orm/query/query.php:942
#5: Bitrix\Main\ORM\Query\Query->exec
	/var/www/html/bitrix/modules/main/lib/orm/data/datamanager.php:499
#6: Bitrix\Main\ORM\Data\DataManager::getList
	/var/www/html/bitrix/modules/main/lib/modulemanager.php:13
#7: Bitrix\Main\ModuleManager::getInstalledModules
	/var/www/html/bitrix/modules/main/lib/modulemanager.php:125
#8: Bitrix\Main\ModuleManager::isModuleInstalled
	/var/www/html/bitrix/modules/main/include.php:31
#9: require_once(string)
	/var/www/html/bitrix/modules/main/include/prolog_before.php:19
#10: require_once(string)
	/var/www/html/404.php:2
#11: include_once(string)
	/var/www/html/bitrix/urlrewrite.php:4
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