Twitter Cards Validation Error

Twitter have had a neat feature for a while now that allows for additional information to be included with a tweet that is then displayed when you expand the tweet. This is how it looks:

And on a mobile client:

To enable these you need to set-up some meta data on your website (there is a good guide here) and then validate this information with Twitter here. When I did so I was greeted by the following message:

ERROR: FetchError:exceeded 4.seconds to Portal.Pink-constructor-safecore while waiting for a response for the request, including retries (if applicable) (Card error)

This … Read the rest