[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT 
	`sotbit_seometa_seometa_url`.`ID` AS `ID`,
	`sotbit_seometa_seometa_url`.`CONDITION_ID` AS `CONDITION_ID`,
	`sotbit_seometa_seometa_url`.`ACTIVE` AS `ACTIVE`,
	`sotbit_seometa_seometa_url`.`REAL_URL` AS `REAL_URL`,
	`sotbit_seometa_seometa_url`.`NEW_URL` AS `NEW_URL`,
	`sotbit_seometa_seometa_url`.`CATEGORY_ID` AS `CATEGORY_ID`,
	`sotbit_seometa_seometa_url`.`NAME` AS `NAME`,
	`sotbit_seometa_seometa_url`.`PROPERTIES` AS `PROPERTIES`,
	`sotbit_seometa_seometa_url`.`iblock_id` AS `iblock_id`,
	`sotbit_seometa_seometa_url`.`section_id` AS `section_id`,
	`sotbit_seometa_seometa_url`.`DATE_CHANGE` AS `DATE_CHANGE`,
	`sotbit_seometa_seometa_url`.`PRODUCT_COUNT` AS `PRODUCT_COUNT`,
	`sotbit_seometa_seometa_url`.`IN_SITEMAP` AS `IN_SITEMAP`,
	`sotbit_seometa_seometa_url`.`STATUS` AS `STATUS`,
	`sotbit_seometa_seometa_url`.`DESCRIPTION` AS `DESCRIPTION`,
	`sotbit_seometa_seometa_url`.`KEYWORDS` AS `KEYWORDS`,
	`sotbit_seometa_seometa_url`.`TITLE` AS `TITLE`,
	`sotbit_seometa_seometa_url`.`DATE_SCAN` AS `DATE_SCAN`
FROM `b_sotbit_seometa_chpu` `sotbit_seometa_seometa_url` 

WHERE UPPER(`sotbit_seometa_seometa_url`.`ACTIVE`) like upper('Y')
AND `sotbit_seometa_seometa_url`.`NEW_URL` = '/product/yamaha-fgx800c-sb-elektroakusticheskaya-gitara/'
ORDER BY `ID` ASC
LIMIT 0, 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/sotbit.seometa/lib/seometaurl.php:172
#5: Sotbit\Seometa\SeometaUrlTable::getByNewUrl(string)
	/home/bitrix/www/bitrix/modules/sotbit.seometa/classes/general/seometa_event_handler.php:113
#6: CSeoMetaEvents::PageStart()
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:490
#7: ExecuteModuleEventEx(array)
	/home/bitrix/www/bitrix/modules/main/include.php:284
#8: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#9: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#10: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#11: require(string)
	/home/bitrix/www/product/index.php:2
#12: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#13: 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(974): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'MB0jzjpm3c4F1d6...') #4 /home/bitrix/www/bitrix/modules/security/classes/general/session_db.php(92): Bitrix\Main\Entity\DataManager::delete(Array) #5 [internal function]: CSecuritySessionDB::write('MB0jzjpm3c4F1d6...', '') #6 [internal function]: session_write_close() in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137