Hey Dears!

I got an abantecart website and it loads very slow. and some other error
I have no idea why, and how could i fix it, so I need help!

I have v.1.2.8.

for slow issue:
i tried clear cache (site & browser)
i did contact with host provider (Godaddy - plesk) and they told me every thing is ok from our side !!
You can check how slowly loads here: www[dot]parlakgunes[dot]com

for sql issue:
i got more than 40 warnings
MySQL class error: Try to escape non-string value: array ( 0 => '763', ) (file:
G:\PleskVhosts\bysaangroup.com\parlakgunes.com\core\lib\cart.php line 238) in
G:\PleskVhosts\bysaangroup.com\parlakgunes.com\core\database\mysql.php on line 134

also
Session save path is not writable!