[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost:3306]: (2002) Failed to create unix socket (400)
/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/db/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, NULL, NULL)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/db/connection.php:330
#2: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/db/connection.php:358
#3: Bitrix\Main\DB\Connection->queryScalar(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/handlers/table/usersessiontable.php:100
#4: Bitrix\Main\Session\Handlers\Table\UserSessionTable::lock(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/handlers/databasesessionhandler.php:50
#5: Bitrix\Main\Session\Handlers\DatabaseSessionHandler->lock(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/handlers/abstractsessionhandler.php:48
#6: Bitrix\Main\Session\Handlers\AbstractSessionHandler->read(string)
	
#7: session_start()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/session.php:125
#8: Bitrix\Main\Session\Session->start()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/lib/session/kernelsessionproxy.php:42
#9: Bitrix\Main\Session\KernelSessionProxy->start()
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include.php:189
#10: require_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include/prolog_before.php:14
#11: require_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include/prolog.php:10
#12: require_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/header.php:1
#13: require(string)
	/var/www/vhosts/allcom.kz/httpdocs/catalog/index.php:1
#14: include_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/modules/main/include/urlrewrite.php:159
#15: include_once(string)
	/var/www/vhosts/allcom.kz/httpdocs/bitrix/urlrewrite.php:2