The following problems were found:

• You cannot add "Drone with 1080P Camera - Foldable Remote Control Quadcopter with Voice Gesture Control, 3D Flip, One Key Start, Emergency Stop, 2 Batteries, Easier to Use, Toy for Kids Adults Beginners, Black" to the cart because the product is out of stock.
• You cannot add "15.6 Inch Laptops, Windows 11 Laptop Computers with 36GB RAM 128GB EMMC+1024GB SSD, Celeron N5095 Quad-Core, 1 Year Office 365, Wifi 6, 180° Viewing, USB 3.2, HDMI, Type-C, 7000Mah Battery" to the cart because the product is out of stock.
• You cannot add "Gaming Desktop Intel Core I5-12400F 6 Core 2.5Ghz PC Computer, RTX 4060 8G, 32G DDR4 RAM, 1TB NVME SSD, Prebuilt Gaming PC Tower Computer for Home and Office (White)" to the cart because the product is out of stock.