Description of issue:
On some occasions, the card won’t show an image in the tweet, but it will in fact show in the validator.
URL affected (must be public):
Static image of the tweet, in case it changes in the meantime, and for future reference.

Troubleshooting steps attempted [note that we will not prioritise posts unless there is evidence of following the troubleshooting guides]:
All troubleshooting steps have been followed.
Most remarkable is that the validator properly shows the image.
I’ve explicitly taken a much older item, as I read somewhere that Twitter caches this image for about 2 weeks, but it also happens to more recent items.
We’ve detected that we may be sending out the automatic tweet too soon, and the image isn’t avilable yet. We’re adjusting this, but surely for such old items, it should have been corrected by now?