Hi there @TungKeslyKomen. 

Happy to help! 

Typically, when you see this, it means that the image link has broken. This cant typically happen whenever you do any thing to update the image.

This thread will walk you through helpful next steps to get this fixed as another user had a similar issue in the past too!

Hope this helps!

-Taylor 

Hey @TungKeslyKomen, is that a static feed added into your message? Or dynamic feed?

Typically that breaking can also happen if the item became unpublished or you cloned it in Shopify but the feed is still listening out for the old product.