Sigh, I messed up again, and the last three images were originally posted without alt text. In this case, I had written alt text for the next 20 or so images, but forgot to push the changes to the server where the bot lives 🤦🏼 I've now changed it so the bot won't post at all if I haven't set the alt text, but will instead notify me to go fix things. Really I just need to sit down for a few hours and just write all the alt text for the remaining hundred odd images!