A network error generally mean that Cypress Update Manger could not fetch the details of/updates for an installed product.
As you said it's a new product, there are no updates available yet.
Eventually that 'Network Error' message will go away and you will see updates for CY8CKIT-149 as when Cypress provides new content.
I think it's safe to ignore that error for now.
The network error has disappeared, so I guess someone fixed a network path or something.