[Error] 
Undefined class constant 'classN' (0)
/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/user.php:242
#0: Bitrix\Main\UserTable::getMap()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/base.php:169
#1: Bitrix\Main\Entity\Base->initialize(string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/base.php:78
#2: Bitrix\Main\Entity\Base::getInstanceDirect(string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/base.php:62
#3: Bitrix\Main\Entity\Base::getInstance(string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/referencefield.php:108
#4: Bitrix\Main\Entity\ReferenceField->getRefEntity()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/querychain.php:210
#5: Bitrix\Main\Entity\QueryChain::getChainByDefinition(object, string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/expressionfield.php:214
#6: Bitrix\Main\Entity\ExpressionField->getBuildFromChains()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/query.php:2822
#7: Bitrix\Main\Entity\Query->collectExprChains(object, array)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/query.php:1017
#8: Bitrix\Main\Entity\Query->addToSelectChain(string, string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/query.php:2076
#9: Bitrix\Main\Entity\Query->buildQuery()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/lib/entity/query.php:778
#10: Bitrix\Main\Entity\Query->exec()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/sale/lib/compatible/compatible.php:593
#11: Bitrix\Sale\Compatible\OrderQuery->compatibleExec(object, NULL)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/sale/lib/compatible/internals/entitycompatibility.php:476
#12: Bitrix\Sale\Compatible\Internals\EntityCompatibility->execute()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/sale/lib/compatible/internals/entitycompatibility.php:150
#13: Bitrix\Sale\Compatible\Internals\EntityCompatibility::setGetListParameters(object, array, array, boolean, boolean, array, boolean)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/sale/lib/compatible/internals/entitycompatibility.php:98
#14: Bitrix\Sale\Compatible\Internals\EntityCompatibility::getList(array, array, boolean, boolean, array, boolean)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/sale/mysql/order.php:492
#15: CSaleOrder::GetList(array, array)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/storeassist/classes/general/storeassist.php:294
#16: CStoreAssist::AgentCountDayOrders()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/classes/mysql/agent.php(163) : eval()'d code:1
#17: eval
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/classes/mysql/agent.php:163
#18: CAgent::ExecuteAgents(string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/classes/mysql/agent.php:40
#19: CAgent::CheckAgents()
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/include.php:263
#20: require_once(string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/include/prolog_before.php:14
#21: require_once(string)
	/home/c/cu06740/bitrix/public_html/bitrix/modules/main/include/prolog.php:10
#22: require_once(string)
	/home/c/cu06740/bitrix/public_html/bitrix/header.php:1
#23: require(string)
	/home/c/cu06740/siam-shop.ru/public_html/index.php:1