[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`main_user_field`.`ID` AS `ID`,
	`main_user_field`.`ENTITY_ID` AS `ENTITY_ID`,
	`main_user_field`.`FIELD_NAME` AS `FIELD_NAME`,
	`main_user_field`.`USER_TYPE_ID` AS `USER_TYPE_ID`,
	`main_user_field`.`XML_ID` AS `XML_ID`,
	`main_user_field`.`SORT` AS `SORT`,
	`main_user_field`.`MULTIPLE` AS `MULTIPLE`
FROM `b_user_field` `main_user_field` 

WHERE `main_user_field`.`ENTITY_ID` = 'PRODUCT'
ORDER BY `SORT` ASC, `ID` ASC
/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/db/mysqliconnection.php:149
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/db/connection.php:327
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/orm/query/query.php:3537
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/orm/query/query.php:952
#3: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/orm/data/datamanager.php:513
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/catalog/general/querybuilder.php:837
#5: CProductQueryBuilder::getProductUserFields()
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/catalog/general/querybuilder.php:642
#6: CProductQueryBuilder::initEntityFields()
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/catalog/general/querybuilder.php:104
#7: CProductQueryBuilder::isValidField(string)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/iblock/classes/general/iblockelement.php:2781
#8: CAllIBlockElement->PrepareGetList(array, array, array, NULL, NULL, array, NULL, NULL, NULL, boolean, NULL, array, array, array)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/iblock/classes/mysql/iblockelement.php:333
#9: CIBlockElement->prepareSql(array, array, boolean, array)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/iblock/classes/mysql/iblockelement.php:692
#10: CIBlockElement::GetList(array, array, boolean, boolean, array)
	/var/www/coffee-butik/data/www/coffee-butik.ru/local/php_interface/init.php:2102
#11: getElementByCode(integer, string)
	/var/www/coffee-butik/data/www/coffee-butik.ru/katalog/detail.php:14
#12: include_once(string)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/include/urlrewrite.php:184
#13: include_once(string)
	/var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/urlrewrite.php:3
----------

Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/db/mysqliconnection.php:149 Stack trace: #0 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/db/connection.php(327): Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT \n\t`sale_...', Array, NULL) #1 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/orm/query/query.php(3537): Bitrix\Main\DB\Connection->query('SELECT \n\t`sale_...') #2 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/orm/query/query.php(952): Bitrix\Main\ORM\Query\Query->query('SELECT \n\t`sale_...') #3 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/orm/data/datamanager.php(513): Bitrix\Main\ORM\Query\Query->exec() #4 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/ipol.fivepost/classes/lib/Bitrix/Handler/Deliveries.php(98): Bitrix\Main\ORM\Data\DataManager::getList(Array) #5 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/ipol.fivepost/classes/lib/Bitrix/Handler/Deliveries.php(57): Ipol\Fivepost\Bitrix\Handler\Deliveries::getActualProfiles(true) #6 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/ipol.fivepost/classes/general/PvzWidgetHandler.php(178): Ipol\Fivepost\Bitrix\Handler\Deliveries::isActive() #7 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/ipol.fivepost/classes/general/SubscribeHandler.php(94): Ipol\Fivepost\PvzWidgetHandler::addWidjetData('<!DOCTYPE html ...') #8 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/tools.php(4737): Ipol\Fivepost\SubscribeHandler::addWidjetData('<!DOCTYPE html ...') #9 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/classes/general/main.php(3202): ExecuteModuleEventEx(Array, Array) #10 [internal function]: CAllMain->EndBufferContent('<!DOCTYPE html ...', 9) #11 /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/classes/general/main.php(3426): ob_end_flush() #12 [internal function]: CAllMain::{closure}() #13 {main} thrown in /var/www/coffee-butik/data/www/coffee-butik.ru/bitrix/modules/main/lib/db/mysqliconnection.php on line 149