[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`.`ID` = 1
/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/entity/query.php:3038
#2: Bitrix\Main\Entity\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/entity/query.php:797
#3: Bitrix\Main\Entity\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php:290
#4: Bitrix\Main\Entity\DataManager::getList(array)
	/home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php:151
#5: Bitrix\Main\Entity\DataManager::getByPrimary(array)
	/home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php:166
#6: Bitrix\Main\Entity\DataManager::getById(integer)
	/home/bitrix/www/local/templates/.default/components/bitrix/catalog/gl_catalog/gorodled/catalog.smart.filter/.default/template.php:25
#7: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:720
#8: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:815
#9: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:747
#10: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:695
#11: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/www/bitrix/components/gorodled/catalog.smart.filter/component.php:903
#12: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:606
#13: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:102
#14: CBitrixComponent->executeComponent()
	/home/bitrix/www/bitrix/components/gorodled/catalog.smart.filter/class.php:129
#15: CBitrixCatalogSmartFilter->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:650
#16: CBitrixComponent->includeComponent(string, array, object)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1037
#17: CAllMain->IncludeComponent(string, string, array, object, array)
	/home/bitrix/www/local/templates/.default/components/bitrix/catalog/gl_catalog/section.php:404
#18: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:720
#19: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:815
#20: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:747
#21: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:695
#22: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/www/bitrix/components/bitrix/catalog/component.php:171
#23: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:606
#24: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:665
#25: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1037
#26: CAllMain->IncludeComponent(string, string, array, boolean)
	/home/bitrix/www/catalog/objects/index.php:1350
#27: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#28: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2

Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137 Stack trace: #0 /home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php(132): Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT * FROM `...') #1 /home/bitrix/www/bitrix/modules/main/lib/db/connection.php(716): Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session') #2 /home/bitrix/www/bitrix/modules/main/lib/db/sqlhelper.php(387): Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID') #3 /home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php(975): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'Brjt5j4BaG6umD7...') #4 /home/bitrix/www/bitrix/modules/security/classes/general/session_db.php(92): Bitrix\Main\Entity\DataManager::delete(Array) #5 [internal function]: CSecuritySessionDB::write('Brjt5j4BaG6umD7...', 'SESS_AUTH|a:1:{...') #6 [internal function]: sess in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137