[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`h2o_redirect_redirect`.`ID` AS `ID`,
	`h2o_redirect_redirect`.`ACTIVE` AS `ACTIVE`,
	`h2o_redirect_redirect`.`REDIRECT_FROM` AS `REDIRECT_FROM`,
	`h2o_redirect_redirect`.`REDIRECT_TO` AS `REDIRECT_TO`,
	`h2o_redirect_redirect`.`IS_REGEXP` AS `IS_REGEXP`,
	`h2o_redirect_redirect`.`COUNT_REDIRECT` AS `COUNT_REDIRECT`
FROM `h2o_redirect` `h2o_redirect_redirect` 

WHERE UPPER(`h2o_redirect_redirect`.`ACTIVE`) like upper('Y')
AND UPPER(`h2o_redirect_redirect`.`IS_REGEXP`) like upper('N')
AND (
	(
		`h2o_redirect_redirect`.`REDIRECT_FROM` = '/rating/spb/doctors/detskiy-revmatolog/f/rajon-kurortnyy_rayon/'
	)
	OR (
		`h2o_redirect_redirect`.`REDIRECT_FROM` = '/rating/spb/doctors/detskiy-revmatolog/f/rajon-kurortnyy_rayon/index.php'
	)
)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:153
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:327
#1: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3558
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/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(array)
	/home/bitrix/www/bitrix/modules/h2o.redirect/include.php:76
#5: CHORedirect::onRedirect()
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:480
#6: ExecuteModuleEventEx(array)
	/home/bitrix/www/bitrix/modules/main/include.php:484
#7: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#9: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#10: require(string)
	/home/bitrix/www/rating/index.php:2
#11: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:184
#12: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2
----------