Unable to validate, "Invalid card type" or "internal error"


URL: http://jiggins-skeleton.myshopify.com/products/airia-desk

Meta data when you view source:

<meta name="twitter:card" content="product">
<meta name="twitter:title" content="Airia Desk">
<meta name="twitter:url" content="http://jiggins-skeleton.myshopify.com/products/airia-desk">
<meta name="twitter:description" content="Sculptured solid walnut frame, sleek aluminum legs, dual-level desktop. An elegant desk for the home office that strikes a harmonious balance between simple function and timeless style.
<meta name="twitter:image:src" content="http://cdn.shopify.com/s/files/1/0318/8297/products/features_overview_large_airia_desk_grande.jpeg?v=1386959150">
<meta name="twitter:data1" content="$2,199.00">
<meta name="twitter:label1" content="PRICE">
<meta name="twitter:data2" content="Herman Miller">
<meta name="twitter:label2" content="VENDOR">

I either get “Invalid card type.” or “Fetching the page failed due to an internal error.” as errors. Any help?