[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`highloadblock_highload_block`.`ID` AS `ID`,
	`highloadblock_highload_block`.`NAME` AS `NAME`,
	`highloadblock_highload_block`.`TABLE_NAME` AS `TABLE_NAME`
FROM `b_hlblock_entity` `highloadblock_highload_block` 

WHERE `highloadblock_highload_block`.`ID` = 1
/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/query/query.php:3398
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/query/query.php:825
#3: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/data/datamanager.php:361
#5: Bitrix\Main\ORM\Data\DataManager::getByPrimary(array)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/data/datamanager.php:376
#6: Bitrix\Main\ORM\Data\DataManager::getById(integer)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/highloadblock/classes/general/cusertypehlblock.php:197
#7: CUserTypeHlblock::getEntityReferences(array, object)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/usertype.php:3134
#8: CUserTypeManager->getEntityReferences(array, object)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/userfield.php:416
#9: Bitrix\Main\UserFieldTable::createUtsEntity(object, array, array, string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/userfield.php:273
#10: Bitrix\Main\UserFieldTable::attachFields(object, string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/entity.php:315
#11: Bitrix\Main\ORM\Entity->postInitialize()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/entity.php:126
#12: Bitrix\Main\ORM\Entity::getInstanceDirect(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/entity.php:104
#13: Bitrix\Main\ORM\Entity::getInstance(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/lib/orm/data/datamanager.php:81
#14: Bitrix\Main\ORM\Data\DataManager::getEntity()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/lib/model/entity.php:470
#15: Bitrix\Catalog\Model\Entity->initEntityTablet()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/lib/model/entity.php:39
#16: Bitrix\Catalog\Model\Entity->__construct()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/lib/model/entity.php:55
#17: Bitrix\Catalog\Model\Entity::getEntity()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/lib/model/entity.php:72
#18: Bitrix\Catalog\Model\Entity::getList(array)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/general/product.php:598
#19: CAllCatalogProduct::GetByID(integer)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/include.php:564
#20: CatalogViewedProductCallback(integer, integer, string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/catalog/general/product_provider.php:800
#21: CCatalogProductProvider::ViewProduct(array)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/sale/mysql/product.php:362
#22: CSaleViewedProduct::Add(array)
	/var/www/www-root/data/www/server-expert.com/bitrix/components/dresscode/catalog.item/component.php:724
#23: include(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component.php:605
#24: CBitrixComponent->__includeComponent()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component.php:680
#25: CBitrixComponent->includeComponent(string, array, boolean, boolean)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/main.php:1041
#26: CAllMain->IncludeComponent(string, string, array, boolean, array)
	/var/www/www-root/data/www/server-expert.com/bitrix/templates/dresscodeV2_copy/components/bitrix/catalog/.default/element.php:129
#27: include(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component_template.php:789
#28: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component_template.php:884
#29: CBitrixComponentTemplate->IncludeTemplate(array)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component.php:764
#30: CBitrixComponent->showComponentTemplate()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component.php:712
#31: CBitrixComponent->includeComponentTemplate(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/components/bitrix/catalog/component.php:171
#32: include(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component.php:605
#33: CBitrixComponent->__includeComponent()
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/component.php:680
#34: CBitrixComponent->includeComponent(string, array, NULL, boolean)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/classes/general/main.php:1041
#35: CAllMain->IncludeComponent(string, string, array)
	/var/www/www-root/data/www/server-expert.com/catalog/index.php:10
#36: include_once(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/modules/main/include/urlrewrite.php:159
#37: include_once(string)
	/var/www/www-root/data/www/server-expert.com/bitrix/urlrewrite.php:2