Abandoned Cart / Dynamic element does not work

Hi Community, 

I use a cart abandoned flow with a dynamic element, which does not work. The customer should be able to see, the product picture of the item in the cart, but the test mails don’t show anything. 

Alle the products are connected with Shopify and are on stock.

I use the following code which I saw in the community, but it does not really work:

{% if item.product.variant.images.0.src %}{{item.product.variant.images.0.src}}{%else%}{{item.product.images.0.src|missing_product_image}}{%endif%}

Can you tell me the mistake I am making?

Chris