Invalid Url: twitter:image. What does this mean?


I recently applied to get my blog approved for Twitter card use. Today I got an e-mail back saying it has been approve for both Summary and Photo cards, yet when I tweet, the cards do not show up.

I have used the preview twitter card tool, and the summary only seems to work with one of my article posts, and no more.

I get the message “Invalid Url: twitter:image”. What does this mean and how can I fix it?

Thank you.