Ошибка при входе на Opencart

[VBGraphics]

После заполнения форм OC выдаёт такое.

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /var/www/vhosts/7743/domains/arredoitaly.ru/public_html/system/database/mysql.php on line 6

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/7743/domains/arredoitaly.ru/public_html/system/database/mysql.php:6) in /var/www/vhosts/7743/domains/arredoitaly.ru/public_html/system/engine/controller.php on line 28

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/7743/domains/arredoitaly.ru/public_html/system/database/mysql.php:6) in /var/www/vhosts/7743/domains/arredoitaly.ru/public_html/system/engine/controller.php on line 29

 

кто знает - помогите