I had photo cards approved and working within the validator on Friday, and now they will not validate because twitter:image:src gives “Failed to proxy image”.
Sample URL: http://comicskingdom.com/amazing-spider-man/2014-04-14
Image src given as: http://bit.ly/1kmYhiI
We did have a problem with the robots.txt and we are now allowing twitterbot to get the images, so that’s not it. Unfortunately our dev team doesn’t have any access to the CDN server so it’s hard for us to debug. Can someone from twitter provide any sort of more detailed error message for this URL?
We also just added photo cards to the site on Friday, when there were only summary cards before. So now we have both on different pages. Is that kosher?