1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''15','9','1','6','11') ORDER BY InventoryYear DESC' at line 1

SELECT u.UserLogo, i.* FROM Inventory as i, User as u WHERE u.UserID = i.UserId and u.UserId not in (,'15','9','1','6','11') ORDER BY InventoryYear DESC