Hi,
In your HikaShop configuration, you have activated the "force canonical URLs on listings". So on the listings, instead of generating the URL of the product page for each product, it will directly use the URL you configured in the "canonical URL" field of your products.
So I suppose that you must have modified the structure of your menu items at some point, leading to some canonical URLs in your products being invalid.
For example, for the product "Combo: Employee OSHA Training Checklist and Exposure Incident Binders", I can see the URL /products/compliance-books-and-manuals/product/15-combo-employee-osha-training-checklist-and-exposure-incident-binders
So I suppose you have that URL as "canonical URL" of that product, and that you must have had previously a menu item "products" with a sub menu item "compliance-books-and-manuals" and that it is not the case anymore.
So you can either:
- empty the canonical URL of that product, so that HikaShop will generate a URL dynamically for that product again.
- modify the canonical URL of that product to use the aliases of the menu items you really have in your Joomla menu manager