Hi,

It appears that there's a problem with rendering the template associated with the wishlist functionality in the website sale module of Odoo. The error message suggests a KeyError, indicating that the key 'product.wishlist' is referenced in the template but is not found in the current context where it's being evaluated. To address this issue, review the template code. Examine the template file 'website_sale_wishlist.header_wishlist_link' to identify where the key 'product.wishlist' is being used. Ensure that it's correctly defined and accessible within the context where it's being called.

Hope it helps