Hi,
To solve this problem, please go to the file app\design\frontend\default\sns_korion\layout\catalog.xml, find and replace the code below
<block type="catalog/navigation" name="catalog.leftnav" after="currency" template="catalog/navigation/sidenav.phtml"/>
By:
<!-- <block type="catalog/navigation" name="catalog.leftnav" after="currency" template="catalog/navigation/sidenav.phtml"/> -->
Thanks,
