[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (1040) Too many connections (400)
SELECT GET_LOCK("61700e9596cdebcf48fa891bebbf727e", 60)
LIMIT 0, 1

/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/lib/db/mysqliconnection.php:131
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, NULL, NULL)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/lib/db/connection.php:357
#2: Bitrix\Main\DB\Connection->queryScalar(string)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/security/lib/session.php:110
#3: Bitrix\Security\SessionTable::lock(string, integer)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/security/classes/general/session_db.php:52
#4: CSecuritySessionDB::read(string)
	
#5: session_start()
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/include.php:301
#6: require_once(string)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/include/prolog_before.php:14
#7: require_once(string)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/include/prolog.php:10
#8: require_once(string)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/header.php:1
#9: require(string)
	/var/www/www-root/data/www/asu.edu.kz/faculty/phys-mat-it/progress_kz/index.php:2
#10: include_once(string)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/modules/main/include/urlrewrite.php:159
#11: include_once(string)
	/var/www/www-root/data/www/asu.edu.kz/bitrix/urlrewrite.php:2