[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`iblock_property`.`ID` AS `ID`,
	`iblock_property`.`IBLOCK_ID` AS `IBLOCK_ID`,
	`iblock_property`.`NAME` AS `NAME`,
	`iblock_property`.`ACTIVE` AS `ACTIVE`,
	`iblock_property`.`SORT` AS `SORT`,
	`iblock_property`.`CODE` AS `CODE`,
	`iblock_property`.`DEFAULT_VALUE` AS `DEFAULT_VALUE`,
	`iblock_property`.`PROPERTY_TYPE` AS `PROPERTY_TYPE`,
	`iblock_property`.`ROW_COUNT` AS `ROW_COUNT`,
	`iblock_property`.`COL_COUNT` AS `COL_COUNT`,
	`iblock_property`.`LIST_TYPE` AS `LIST_TYPE`,
	`iblock_property`.`MULTIPLE` AS `MULTIPLE`,
	`iblock_property`.`XML_ID` AS `XML_ID`,
	`iblock_property`.`FILE_TYPE` AS `FILE_TYPE`,
	`iblock_property`.`MULTIPLE_CNT` AS `MULTIPLE_CNT`,
	`iblock_property`.`LINK_IBLOCK_ID` AS `LINK_IBLOCK_ID`,
	`iblock_property`.`WITH_DESCRIPTION` AS `WITH_DESCRIPTION`,
	`iblock_property`.`SEARCHABLE` AS `SEARCHABLE`,
	`iblock_property`.`FILTRABLE` AS `FILTRABLE`,
	`iblock_property`.`IS_REQUIRED` AS `IS_REQUIRED`,
	`iblock_property`.`VERSION` AS `VERSION`,
	`iblock_property`.`USER_TYPE` AS `USER_TYPE`,
	`iblock_property`.`USER_TYPE_SETTINGS` AS `USER_TYPE_SETTINGS`,
	`iblock_property`.`HINT` AS `HINT`
FROM `b_iblock_property` `iblock_property` 

WHERE `iblock_property`.`IBLOCK_ID` = 29
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
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3304
#2: Bitrix\Main\ORM\Query\Query->query
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:816
#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
	/home/bitrix/www/bitrix/modules/iblock/classes/general/iblockelement.php:5481
#5: CAllIBlockElement::GetPropertyValuesArray
	/home/bitrix/www/bitrix/modules/iblock/lib/component/elementlist.php:848
#6: Bitrix\Iblock\Component\ElementList->modifyDisplayProperties
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:777
#7: Bitrix\Iblock\Component\Base->initElementList
	/home/bitrix/www/bitrix/components/bitrix/catalog.section/class.php:581
#8: CatalogSectionComponent->initElementList
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:3950
#9: Bitrix\Iblock\Component\Base->processResultData
	/home/bitrix/www/bitrix/components/bitrix/catalog.section/class.php:91
#10: CatalogSectionComponent->processResultData
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4453
#11: Bitrix\Iblock\Component\Base->loadData
	/home/bitrix/www/bitrix/modules/iblock/lib/component/elementlist.php:1201
#12: Bitrix\Iblock\Component\ElementList->loadData
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4442
#13: Bitrix\Iblock\Component\Base->initialLoadAction
	/home/bitrix/www/bitrix/components/bitrix/catalog.section/class.php:333
#14: CatalogSectionComponent->initialLoadAction
	
#15: call_user_func
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4627
#16: Bitrix\Iblock\Component\Base->doAction
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4645
#17: Bitrix\Iblock\Component\Base->executeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:649
#18: CBitrixComponent->includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#19: CAllMain->IncludeComponent
	/home/bitrix/www/catalog/section.php:663
#20: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#21: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2