The documentation page for the gallery twitter card (https://dev.twitter.com/docs/cards/types/gallery-card) states that meta names of image url are twitter:imageX. But according to the validator it’s twitter:imageX:src
twitter:imageX
twitter:imageX:src
Sorry about the confusing documentation.
Either one should work; let us know if you have other issues. (And we’ll update the docs!)
Hi, thanks for the reply and correction, there is the same issue in https://dev.twitter.com/docs/cards/markup-reference.