Hello
I also have a problem with the internal server error.
I have a store where we sell physical products, virtual products, and downloadable products.
Our payment method is MercadoPago and Direct Transfer
1) The problem become when I try to add a virtual or downloadable product to the cart and I try to pay with direct bank transfer
2) The other problem is that when I have a physical product with virtual or downloadable product in the cart, I cannot see the shipping method.
My website is http://estudiocordobacostura.com/
I really hope you can help us