For over a week now I’ve been getting error messages when reviewing my cards on Ankiweb. Both on mobile and computer. At first it was occasional but now happens every time I review. The first few cards are always fine but later I get a “bad request” popup. I refresh, review the same card without a problem and the popup comes up again when I review the next card. I have been using this deck for a long time and never had problems with it. If I keep going and refresh every time, after a few error messages the website shows “error: something went wrong with processing your request. this is often caused by issues with your collection - please try the Check Database tool in one of the downloadable versions of Anki” and refresh doesn’t help anymore. I checked the database in desktop version of Anki on my Macbook, it was all ok, synced it, and the problem still persists.