[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (1040) Too many connections (400)
/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/db/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/db/connection.php:329
#2: Bitrix\Main\DB\Connection->query(string)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/config/option.php:227
#3: Bitrix\Main\Config\Option::load(string, NULL)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/config/option.php:53
#4: Bitrix\Main\Config\Option::get(string, string, string)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/httprequest.php:337
#5: Bitrix\Main\HttpRequest->prepareCookie(array)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/httprequest.php:63
#6: Bitrix\Main\HttpRequest->__construct(object, array, array, array, array)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/httpapplication.php:43
#7: Bitrix\Main\HttpApplication->initializeContext(array)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/modules/main/lib/application.php:122
#8: Bitrix\Main\Application->initializeExtendedKernel(array)
	/var/www/vhosts/oilgasinform.ru/httpdocs/bitrix/php_interface/include/main_core.php:16
#9: require_once(string)
	/var/www/vhosts/oilgasinform.ru/httpdocs/urlrewrite_ext.php:8