[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` = 17
AND `iblock_property`.`ACTIVE` = 'Y'
ORDER BY `SORT` ASC, `ID` ASC
/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/orm/query/query.php:3304
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/orm/query/query.php:816
#3: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/classes/general/iblockelement.php:5481
#5: CAllIBlockElement::GetPropertyValuesArray(array, integer, array)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/element.php:556
#6: Bitrix\Iblock\Component\Element->modifyDisplayProperties(integer, array)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/base.php:777
#7: Bitrix\Iblock\Component\Base->initElementList()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/base.php:3950
#8: Bitrix\Iblock\Component\Base->processResultData()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/element.php:286
#9: Bitrix\Iblock\Component\Element->processResultData()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/base.php:4453
#10: Bitrix\Iblock\Component\Base->loadData()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/base.php:4442
#11: Bitrix\Iblock\Component\Base->initialLoadAction()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/element.php:271
#12: Bitrix\Iblock\Component\Element->initialLoadAction()
	
#13: call_user_func(array)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/base.php:4627
#14: Bitrix\Iblock\Component\Base->doAction()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/iblock/lib/component/base.php:4645
#15: Bitrix\Iblock\Component\Base->executeComponent()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component.php:649
#16: CBitrixComponent->includeComponent(string, array, object)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/main.php:1039
#17: CAllMain->IncludeComponent(string, string, array, object)
	/var/www/www-root/data/www/novasystem.by/bitrix/templates/realtok/components/bitrix/catalog/main/page_blocks/element_1.php:192
#18: include_once(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/templates/realtok/components/bitrix/catalog/main/element_normal.php:71
#19: include_once(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/templates/realtok/components/bitrix/catalog/main/element.php:119
#20: include(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component_template.php:725
#21: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component_template.php:820
#22: CBitrixComponentTemplate->IncludeTemplate(array)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component.php:746
#23: CBitrixComponent->showComponentTemplate()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component.php:694
#24: CBitrixComponent->includeComponentTemplate(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/components/bitrix/catalog/component.php:171
#25: include(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component.php:605
#26: CBitrixComponent->__includeComponent()
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/component.php:664
#27: CBitrixComponent->includeComponent(string, array, boolean)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/classes/general/main.php:1039
#28: CAllMain->IncludeComponent(string, string, array, boolean)
	/var/www/www-root/data/www/realtok.by/catalog/index.php:1001
#29: include_once(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/modules/main/include/urlrewrite.php:159
#30: include_once(string)
	/var/www/www-root/data/www/novasystem.by/bitrix/urlrewrite.php:2

Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/db/mysqliconnection.php:137 Stack trace: #0 /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/db/connection.php(330): Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT \n\t`main_...', Array, NULL) #1 /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/orm/query/query.php(3304): Bitrix\Main\DB\Connection->query('SELECT \n\t`main_...') #2 /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/orm/query/query.php(816): Bitrix\Main\ORM\Query\Query->query('SELECT \n\t`main_...') #3 /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/orm/data/datamanager.php(500): Bitrix\Main\ORM\Query\Query->exec() #4 /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/analytics/sitespeed.php(95): Bitrix\Main\ORM\Data\DataManager::getList(Array) #5 /var/www/www-root/data/www/novasystem.by/bitrix/module in /var/www/www-root/data/www/novasystem.by/bitrix/modules/main/lib/db/mysqliconnection.php on line 137