duplicate products

Please help me figure this out

I am using Ubercart 3. Right after installation, I create one product and display it through the built-in views uc_catalog and uc_catalog_term. As a result, the product is displayed multiple times in the content area. Here is a screenshot. 

Accordingly, if I create several products (manually or with the help of Devel), they are also duplicated. On average, 2-4 times

Please help me get rid of the duplication and understand why it is happening