[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`iblock_section_property`.`PROPERTY_ID` AS `PROPERTY_ID`,
	`iblock_section_property_property`.`PROPERTY_TYPE` AS `IBLOCK_SECTION_PROPERTY_PROPERTY_PROPERTY_TYPE`,
	`iblock_section_property_property`.`USER_TYPE` AS `IBLOCK_SECTION_PROPERTY_PROPERTY_USER_TYPE`
FROM `b_iblock_section_property` `iblock_section_property` 
LEFT JOIN `b_iblock_property` `iblock_section_property_property` ON `iblock_section_property`.`PROPERTY_ID` = `iblock_section_property_property`.`ID`
WHERE (`iblock_section_property`.`IBLOCK_ID` in (5, 0) or `iblock_section_property`.`IBLOCK_ID` IS NULL)
AND `iblock_section_property`.`SMART_FILTER` = 'Y'
/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/lib/entity/query.php:3038
#2: Bitrix\Main\Entity\Query->query
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/lib/entity/query.php:797
#3: Bitrix\Main\Entity\Query->exec
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/lib/entity/datamanager.php:290
#4: Bitrix\Main\Entity\DataManager::getList
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/lib/propertyindex/querybuilder.php:497
#5: Bitrix\Iblock\PropertyIndex\QueryBuilder->getFilterProperty
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/lib/propertyindex/querybuilder.php:226
#6: Bitrix\Iblock\PropertyIndex\QueryBuilder->fillWhere
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/lib/propertyindex/querybuilder.php:98
#7: Bitrix\Iblock\PropertyIndex\QueryBuilder->getFilterSql
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/classes/general/iblockelement.php:656
#8: CAllIBlockElement->MkFilter
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/classes/general/iblockelement.php:3091
#9: CAllIBlockElement->PrepareGetList
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/classes/mysql/iblockelement.php:323
#10: CIBlockElement->prepareSql
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/iblock/classes/mysql/iblockelement.php:643
#11: CIBlockElement::GetList
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/templates/htc_online/header.php:110
#12: include_once(string)
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/include/prolog_after.php:96
#13: require(string)
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/include/prolog.php:11
#14: require_once(string)
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/header.php:1
#15: require(string)
	/home/bitrix/ext_www/dev.htc-online.ru/actions/index.php:2
#16: include_once(string)
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/modules/main/include/urlrewrite.php:159
#17: include_once(string)
	/home/bitrix/ext_www/dev.vivestore.ru/bitrix/urlrewrite.php:2