[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`sale_internals_discount_group`.`DISCOUNT_ID` AS `DISCOUNT_ID`,
	`sale_internals_discount_group`.`ID` AS `UALIAS_0`
FROM `b_sale_discount_group` `sale_internals_discount_group` 

WHERE `sale_internals_discount_group`.`GROUP_ID` IN (2)
AND `sale_internals_discount_group`.`ACTIVE` = 'Y'
ORDER BY `DISCOUNT_ID` ASC
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:149
#0: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:331
#1: Bitrix\Main\DB\Connection->query
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3557
#2: Bitrix\Main\ORM\Query\Query->query
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:952
#3: Bitrix\Main\ORM\Query\Query->exec
	/home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php:513
#4: Bitrix\Main\ORM\Data\DataManager::getList
	/home/bitrix/www/bitrix/modules/sale/lib/discount/runtimecache/discountcache.php:52
#5: Bitrix\Sale\Discount\RuntimeCache\DiscountCache->getDiscountIds
	/home/bitrix/www/bitrix/modules/iblock/classes/general/comp_pricetools.php:145
#6: CIBlockPriceTools::SetCatalogDiscountCache
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:769
#7: Bitrix\Iblock\Component\Base->initPrices
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4161
#8: Bitrix\Iblock\Component\Base->processResultData
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:299
#9: Bitrix\Iblock\Component\Element->processResultData
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4700
#10: Bitrix\Iblock\Component\Base->loadData
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4689
#11: Bitrix\Iblock\Component\Base->initialLoadAction
	/home/bitrix/www/bitrix/modules/iblock/lib/component/element.php:284
#12: Bitrix\Iblock\Component\Element->initialLoadAction
	
#13: call_user_func
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4876
#14: Bitrix\Iblock\Component\Base->doAction
	/home/bitrix/www/bitrix/modules/iblock/lib/component/base.php:4894
#15: Bitrix\Iblock\Component\Base->executeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:668
#16: CBitrixComponent->includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1195
#17: CAllMain->IncludeComponent
	/home/bitrix/www/bitrix/templates/academ-new/components/bitrix/catalog/main_ctweb/element.php:65
#18: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:790
#19: CBitrixComponentTemplate->__IncludePHPTemplate
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:885
#20: CBitrixComponentTemplate->IncludeTemplate
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:784
#21: CBitrixComponent->showComponentTemplate
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:724
#22: CBitrixComponent->includeComponentTemplate
	/home/bitrix/www/bitrix/components/bitrix/catalog/component.php:323
#23: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:615
#24: CBitrixComponent->__includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:692
#25: CBitrixComponent->includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1195
#26: CAllMain->IncludeComponent
	/home/bitrix/www/catalog/index.php:2
#27: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:184
#28: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2
----------

Query Error: SELECT BS.ID AS ID, BS.IBLOCK_ID AS IBLOCK_ID, BS.IBLOCK_SECTION_ID AS IBLOCK_SECTION_ID, B.SECTION_PAGE_URL AS SECTION_PAGE_URL, BS.CODE AS CODE, BS.XML_ID AS EXTERNAL_ID, B.IBLOCK_TYPE_ID AS IBLOCK_TYPE_ID, B.CODE AS IBLOCK_CODE, B.XML_ID AS IBLOCK_EXTERNAL_ID, BS.GLOBAL_ACTIVE AS GLOBAL_ACTIVE FROM b_iblock_section BS INNER JOIN b_iblock B ON B.ID = BS.IBLOCK_ID WHERE BS.ID=406 [[2006] MySQL server has gone away]
Query Error!