[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`iblock_property`.`ID` AS `ID`,
	`iblock_property`.`CODE` AS `CODE`,
	`iblock_property`.`SORT` AS `SORT`
FROM `b_iblock_property` `iblock_property` 

WHERE `iblock_property`.`IBLOCK_ID` = 3
AND `iblock_property`.`ACTIVE` = 'Y'
ORDER BY `SORT` ASC, `ID` ASC
/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:3209
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:807
#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/component/base.php:2335
#5: Bitrix\Iblock\Component\Base->getPropertyList(integer, array)
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:560
#6: Bitrix\Iblock\Component\Element->modifyDisplayProperties(integer, array)
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:777
#7: Bitrix\Iblock\Component\Base->initElementList()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:3950
#8: Bitrix\Iblock\Component\Base->processResultData()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:286
#9: Bitrix\Iblock\Component\Element->processResultData()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4453
#10: Bitrix\Iblock\Component\Base->loadData()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4442
#11: Bitrix\Iblock\Component\Base->initialLoadAction()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:271
#12: Bitrix\Iblock\Component\Element->initialLoadAction()
	
#13: call_user_func(array)
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4627
#14: Bitrix\Iblock\Component\Base->doAction()
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4645
#15: Bitrix\Iblock\Component\Base->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:648
#16: CBitrixComponent->includeComponent(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#17: CAllMain->IncludeComponent(string, string, array)
	/home/bitrix/www/product/index.php:95
#18: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#19: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2