[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`highloadblock_highload_block`.`ID` AS `ID`,
	`highloadblock_highload_block`.`NAME` AS `NAME`,
	`highloadblock_highload_block`.`TABLE_NAME` AS `TABLE_NAME`
FROM `b_hlblock_entity` `highloadblock_highload_block` 

WHERE `highloadblock_highload_block`.`NAME` = 'DiscountCardType'
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3304
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:816
#3: Bitrix\Main\ORM\Query\Query->exec()
	/home/bitrix/www/bitrix/modules/highloadblock/lib/highloadblock.php:338
#4: Bitrix\Highloadblock\HighloadBlockTable::resolveHighloadblock(string)
	/home/bitrix/www/local/php_interface/discount_card/card_type.php:14
#5: include_once(string)
	/home/bitrix/www/local/php_interface/discount_card/load.php:4
#6: include_once(string)
	/home/bitrix/www/local/php_interface/init.php:136
#7: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include.php:241
#8: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#9: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#10: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#11: require(string)
	/home/bitrix/www/catalog/index.php:3
#12: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#13: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2