[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost, 127.0.0.1]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111) (400)
/var/www/html/vmkros/bitrix/modules/main/lib/db/mysqlconnection.php:50
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
	/var/www/html/vmkros/bitrix/modules/main/lib/db/mysqlconnection.php:103
#1: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
	/var/www/html/vmkros/bitrix/modules/main/lib/db/connection.php:329
#2: Bitrix\Main\DB\Connection->query(string)
	/var/www/html/vmkros/bitrix/modules/main/lib/config/option.php:183
#3: Bitrix\Main\Config\Option::load(string, NULL)
	/var/www/html/vmkros/bitrix/modules/main/lib/config/option.php:53
#4: Bitrix\Main\Config\Option::get(string, string, integer, boolean)
	/var/www/html/vmkros/bitrix/modules/main/classes/general/option.php:30
#5: CAllOption::GetOptionString(string, string, integer, boolean)
	/var/www/html/vmkros/bitrix/modules/main/classes/general/option.php:58
#6: CAllOption::GetOptionInt(string, string, integer)
	/var/www/html/vmkros/bitrix/modules/main/include/mainpage.php:3
#7: require(string)
	/var/www/html/vmkros/index.php:4