[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`iblock_inherited_property`.`ID` AS `ID`
FROM `b_iblock_iproperty` `iblock_inherited_property` 

WHERE `iblock_inherited_property`.`IBLOCK_ID` = 19
LIMIT 0, 1

/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3306
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:817
#3: Bitrix\Main\ORM\Query\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/home/bitrix/www/bitrix/modules/iblock/lib/inheritedproperty/basetemplate.php:145
#5: Bitrix\Iblock\InheritedProperty\BaseTemplate->hasTemplates(object)
	/home/bitrix/www/bitrix/modules/iblock/lib/inheritedproperty/basevalues.php:158
#6: Bitrix\Iblock\InheritedProperty\BaseValues->hasTemplates()
	/home/bitrix/www/bitrix/modules/iblock/lib/inheritedproperty/elementvalues.php:130
#7: Bitrix\Iblock\InheritedProperty\ElementValues->queryValues()
	/home/bitrix/www/bitrix/modules/iblock/lib/inheritedproperty/basevalues.php:104
#8: Bitrix\Iblock\InheritedProperty\BaseValues->getValues()
	/home/bitrix/www/local/components/tesslab/location.cities/component.php:400
#9: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:605
#10: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:664
#11: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#12: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/local/templates/expert24_default/header.php:182
#13: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_after.php:106
#14: require(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:11
#15: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#16: require(string)
	/home/bitrix/www/ua/catalog/index.php:2
#17: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#18: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2