[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`main_session_handlers_table_user_session`.`SESSION_DATA` AS `SESSION_DATA`,
	`main_session_handlers_table_user_session`.`SESSION_ID` AS `UALIAS_0`
FROM `b_user_session` `main_session_handlers_table_user_session` 

WHERE `main_session_handlers_table_user_session`.`SESSION_ID` = 'ukr1PNNtWjVStO4LwQ6WkFWw6KoegKli'
LIMIT 0, 1

/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/orm/query/query.php:3406
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/orm/query/query.php:843
#3: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/orm/data/datamanager.php:500
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/orm/data/datamanager.php:410
#5: Bitrix\Main\ORM\Data\DataManager::getRow(array)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/handlers/databasesessionhandler.php:24
#6: Bitrix\Main\Session\Handlers\DatabaseSessionHandler->processRead(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/handlers/abstractsessionhandler.php:53
#7: Bitrix\Main\Session\Handlers\AbstractSessionHandler->read(string)
	
#8: session_start()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/session.php:125
#9: Bitrix\Main\Session\Session->start()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/kernelsessionproxy.php:42
#10: Bitrix\Main\Session\KernelSessionProxy->start()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include.php:189
#11: require_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include/prolog_before.php:14
#12: require_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include/prolog.php:10
#13: require_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/header.php:1
#14: require(string)
	/var/www/vhosts/allcom.kz/httpdocs/catalog/index.php:1
#15: include_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include/urlrewrite.php:159
#16: include_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/urlrewrite.php:2