Item appears in cart but Paypal says Cart is empty
Just reporting an issue I ran into.
I had an item named "The" Reuben (it's a sandwich shop. Notice the double quotes around THE in the name.
Whenever this item was added to the cart, the entire cart worked until submitted to Paypal. When that happened, Paypal said the cart was empty.
Once I updated the name in the "Add to cart" behavior, and removed the double quotes, everything worked great.
Just a FYI for everyone.