Warning: mysql_connect(): Too many connections in /var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/lib/db/mysqlconnection.php on line 45

[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost, 127.0.0.1] (400)
/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/lib/db/mysqlconnection.php:50
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/lib/data/connection.php:53
#1: Bitrix\Main\Data\Connection->getResource()
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/lib/db/mysqlsqlhelper.php:21
#2: Bitrix\Main\DB\MysqlSqlHelper->forSql(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/lib/db/mysqlcommonconnection.php:48
#3: Bitrix\Main\DB\MysqlCommonConnection->isTableExists(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/iblock/lib/propertyindex/dictionary.php:54
#4: Bitrix\Iblock\PropertyIndex\Dictionary->isExists()
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/iblock/lib/propertyindex/facet.php:57
#5: Bitrix\Iblock\PropertyIndex\Facet->__construct(integer)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/components/bitrix/catalog.smart.filter/class.php:127
#6: CBitrixCatalogSmartFilter->executeComponent()
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component.php:585
#7: CBitrixComponent->includeComponent(string, array, boolean)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/main.php:1035
#8: CAllMain->IncludeComponent(string, string, array, boolean)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/templates/okk/components/bitrix/news/tours/news.php:82
#9: include(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component_template.php:714
#10: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component_template.php:806
#11: CBitrixComponentTemplate->IncludeTemplate(array)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component.php:681
#12: CBitrixComponent->showComponentTemplate()
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component.php:629
#13: CBitrixComponent->includeComponentTemplate(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/components/bitrix/news/component.php:209
#14: include(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component.php:548
#15: CBitrixComponent->__includeComponent()
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/component.php:600
#16: CBitrixComponent->includeComponent(string, array, NULL)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/classes/general/main.php:1035
#17: CAllMain->IncludeComponent(string, string, array)
	/var/www/vhosts/okk.kz/httpdocs/tours-list/index.php:81
#18: include_once(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/modules/main/include/urlrewrite.php:159
#19: include_once(string)
	/var/www/vhosts/okk.kz/httpdocs/bitrix/urlrewrite.php:2