[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (1) Can't create/write to file '/tmp/#sql-temptable-44c-169b4a-cf0.MAI' (Errcode: 28 "No space left on device") (400)

				SELECT NULL AS SITE_ID, NAME, VALUE 
				FROM b_option 
				WHERE MODULE_ID = 'workflow' 
				UNION
				SELECT SITE_ID, NAME, VALUE 
				FROM b_option_site 
				WHERE MODULE_ID = 'workflow' 
			
/home/bitrix/kernel/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/bitrix/kernel/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query
	/home/bitrix/kernel/bitrix/modules/main/lib/config/option.php:200
#2: Bitrix\Main\Config\Option::load
	/home/bitrix/kernel/bitrix/modules/main/lib/config/option.php:38
#3: Bitrix\Main\Config\Option::get
	/home/bitrix/kernel/bitrix/modules/main/classes/general/option.php:30
#4: CAllOption::GetOptionString
	/home/bitrix/kernel/bitrix/modules/iblock/classes/mysql/iblockelement.php:234
#5: CIBlockElement->prepareSql
	/home/bitrix/kernel/bitrix/modules/iblock/classes/mysql/iblockelement.php:662
#6: CIBlockElement::GetList
	/home/bitrix/app/local/php_interface/user_class/Tools.php:175
#7: Pena\Tools::getElementByCode
	/home/bitrix/app/local/php_interface/const.php:222
#8: require_once(string)
	/home/bitrix/app/local/php_interface/init.php:6
#9: include_once(string)
	/home/bitrix/kernel/bitrix/modules/main/include.php:236
#10: require_once(string)
	/home/bitrix/kernel/bitrix/modules/main/include/prolog_before.php:14
#11: require_once(string)
	/home/bitrix/kernel/bitrix/modules/main/include/prolog.php:10
#12: require_once(string)
	/home/bitrix/kernel/bitrix/header.php:1
#13: require(string)
	/home/bitrix/app/sertificat/index.php:2