problem with link to detail page

-- HikaShop version -- : 2.6.3
-- Joomla version -- : 3.6.2

I've a problem in some category of product: when I click on link to detail product or on image of product, the link redirect me to home page (index.php) not on page of product detail. In same category there are some links that work well and some links don't work. how I can solve it?

The problem was canonical url.
Sorry!