Employee not working / customers not buying baked goods

Since the May patches (not sure which one), I was having a similar issue. I discovered it had something to do with having food items stocked in the "Lice Cold Retail Freezer", but Sims no longer able to purchase directly from them. This was occurring even with baked goods available and marked for sale elsewhere.

Removed the culprit, problem solved. Hope your fix proves as simple!