Same category items are lost after commenting on the product.

[jitender]

When I am on the page "product.php?id_product=65" and I enter a comment on the product I get a warning after page submission

Warning: Invalid argument supplied for foreach() in \prestashop\modules\productscategory\productscategory.php on line 56

Also because of this now I don't get items in the same category scoller on the page. The scroller is now empty.
Also please let me know from where in the admin will I get the section to view/approve comments entered by the customers.


Thanks in advance and as a beginner I really liked the way and the support provided by Prestashop.