[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`sale_internals_custom_fields`.`FIELD` AS `FIELD`,
	`sale_internals_custom_fields`.`ENTITY_ID` AS `ENTITY_ID`,
	`sale_internals_custom_fields`.`ID` AS `UALIAS_0`
FROM `b_sale_order_entities_custom_fields` `sale_internals_custom_fields` 
WHERE 1=0
AND (UPPER(`sale_internals_custom_fields`.`ENTITY_TYPE`) like upper(''))
AND (UPPER(`sale_internals_custom_fields`.`ENTITY_REGISTRY_TYPE`) like upper(''))
/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/lib/orm/query/query.php:3540
#2: Bitrix\Main\ORM\Query\Query->query
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/lib/orm/query/query.php:949
#3: Bitrix\Main\ORM\Query\Query->exec
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/sale/lib/internals/customfieldscontroller.php:135
#5: Bitrix\Sale\Internals\CustomFieldsController->initializeCollection
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/sale/lib/basketitemcollection.php:90
#6: Bitrix\Sale\BasketItemCollection->loadFromArray
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/sale/lib/basketbase.php:185
#7: Bitrix\Sale\BasketBase->loadFromDb
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/sale/lib/basketbase.php:118
#8: Bitrix\Sale\BasketBase::loadItemsForFUser
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/sale/general/basket.php:3409
#9: CAllSaleBasket::refreshFUserBasket
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/sale/general/basket.php:3281
#10: CAllSaleBasket::UpdateBasketPrices
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/aspro.max/classes/general/CMax.php:7813
#11: CMax::SetJSOptions
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/templates/aspro_max_orig/header.php:71
#12: include_once(string)
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/include/prolog_after.php:106
#13: require(string)
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/include/prolog.php:11
#14: require_once(string)
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/header.php:1
#15: require(string)
	/home/bitrix/ext_www/pitermotors.ru/catalog/index.php:1
#16: include_once(string)
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/modules/main/include/urlrewrite.php:160
#17: include_once(string)
	/home/bitrix/ext_www/crm.pitermotors.ru/bitrix/urlrewrite.php:2