Pedal bin partially broken (Bermondsey SE16)

Charcoal grey pedal bin from Next, two compartments plus a small food waste bin that sits at the top of one of the compartments. As you can see, the one on the left isn’t closing properly, not sure what’s happened or how to fix it but if you are handy or have a 3D printer to print the bit that’s broken, this may be perfect for you. It is otherwise a very nice bin.