[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: Table './ma@002dkazan/b_sec_session' is marked as crashed and should be repaired (400)
SELECT 
	`security_session`.`SESSION_DATA` AS `SESSION_DATA`
FROM `b_sec_session` `security_session` 

WHERE `security_session`.`SESSION_ID` = 'R4TZM4cax5jMW8vDvVTYcnu4Ndrd6cJp'
LIMIT 0, 1

/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/mysqlconnection.php:116
#0: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/orm/query/query.php:3190
#2: Bitrix\Main\ORM\Query\Query->query(string)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/orm/query/query.php:806
#3: Bitrix\Main\ORM\Query\Query->exec()
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/orm/data/datamanager.php:457
#4: Bitrix\Main\ORM\Data\DataManager::getList(array)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/orm/data/datamanager.php:367
#5: Bitrix\Main\ORM\Data\DataManager::getRow(array)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/security/classes/general/session_db.php:59
#6: CSecuritySessionDB::read(string)
	
#7: session_start()
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/include.php:281
#8: require_once(string)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/include/prolog_before.php:14
#9: require_once(string)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/include/prolog.php:10
#10: require_once(string)
	/var/www/kzn.aero/data/www/kzn.aero/bitrix/header.php:1
#11: require(string)
	/var/www/kzn.aero/data/www/kzn.aero/en/about-us/representation-of-the-airlines/index.php:2

Fatal error: Uncaught exception 'Bitrix\Main\DB\SqlQueryException' with message 'Mysql query error: Table './ma@002dkazan/b_sec_session' is marked as crashed and should be repaired' in /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/mysqlconnection.php:116 Stack trace: #0 /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/mysqlcommonconnection.php(136): Bitrix\Main\DB\MysqlConnection->queryInternal('SELECT * FROM `...') #1 /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/connection.php(716): Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session') #2 /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/sqlhelper.php(387): Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID') #3 /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/orm/data/datamanager.php(1190): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'R4TZM4cax5jMW8v...') #4 /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/security/classes/general/ in /var/www/kzn.aero/data/www/kzn.aero/bitrix/modules/main/lib/db/mysqlconnection.php on line 116