[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: MySQL server has gone away (400)
SELECT 
	`catalog_price`.`ID` AS `ID`,
	`catalog_price`.`PRODUCT_ID` AS `PRODUCT_ID`,
	`catalog_price`.`EXTRA_ID` AS `EXTRA_ID`,
	`catalog_price`.`CATALOG_GROUP_ID` AS `CATALOG_GROUP_ID`,
	`catalog_price`.`PRICE` AS `PRICE`,
	`catalog_price`.`CURRENCY` AS `CURRENCY`,
	`catalog_price`.`TIMESTAMP_X` AS `TIMESTAMP_X`,
	`catalog_price`.`QUANTITY_FROM` AS `QUANTITY_FROM`,
	`catalog_price`.`QUANTITY_TO` AS `QUANTITY_TO`,
	`catalog_price`.`TMP_ID` AS `TMP_ID`,
	`catalog_price`.`PRICE_SCALE` AS `PRICE_SCALE`
FROM `b_catalog_price` `catalog_price` 

WHERE `catalog_price`.`PRODUCT_ID` IN (50731)
AND `catalog_price`.`CATALOG_GROUP_ID` IN (1)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:116
#0: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/entity/query.php:1924
#2: Bitrix\Main\Entity\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/entity/query.php:505
#3: Bitrix\Main\Entity\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php:256
#4: Bitrix\Main\Entity\DataManager::getList(array)
	/home/bitrix/www/bitrix/modules/catalog/lib/discount/discountmanager.php:607
#5: Bitrix\Catalog\Discount\DiscountManager::preloadPriceData(array, array)
	/home/bitrix/www/bitrix/modules/catalog/lib/discount/discountmanager.php:521
#6: Bitrix\Catalog\Discount\DiscountManager::getPriceDataByProductId(integer, integer)
	/home/bitrix/www/bitrix/modules/catalog/general/discount.php:1216
#7: CAllCatalogDiscount::GetDiscount(integer, integer, string, array, string, string, boolean)
	/home/bitrix/www/bitrix/modules/catalog/general/product.php:964
#8: CAllCatalogProduct::GetOptimalPrice(string, integer, array, string, NULL)
	/home/bitrix/www/bitrix/templates/dresscode/components/bitrix/menu/leftMenu2/result_modifier.php:236
#9: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:868
#10: CBitrixComponentTemplate->__IncludeMutatorFile(array, array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:775
#11: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:681
#12: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:629
#13: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/bitrix/menu/component.php:385
#14: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:548
#15: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:94
#16: CBitrixComponent->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:585
#17: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1035
#18: CAllMain->IncludeComponent(string, string, array, boolean, array)
	/home/bitrix/www/sect_leftBlock.php:29
#19: include(string)
	/home/bitrix/www/bitrix/templates/.default/components/bitrix/main.include/template1/template.php:17
#20: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:714
#21: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:806
#22: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:681
#23: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:629
#24: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/bitrix/main.include/component.php:280
#25: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:548
#26: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:600
#27: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1035
#28: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/bitrix/templates/dresscode/header.php:101
#29: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_after.php:96
#30: require(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:11
#31: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#32: require(string)
	/home/bitrix/www/catalog/index.php:2
#33: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#34: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2