Query Errors On PHP Website

We have the following errors on our website that need correcting. To see the errors please following the following directions. 1. Go to website [login to view URL] 2. Select Brand: Meguiar's in form 3. Select all and search 4. Add one of the Meguiar's products in the shopping cart 5. Go to view shopping cart You will see the error "Query Error : There is an error in Query" where the product item should be. The second problem is that when you select "category" in the form, there should be categories listed. It only shows "All" for the brand Meguiar's. I did a test by adding a new category to see what happened. The same errors occurred. Any new brand/category/product has the same problem. This project is to correct these problems and any problems associated that are causing the issue.