Basically:
- I had 1 single card on the lessons’ pile.
- I opened lessons, and clicked on “go to card” in order to delete it.
- I deleted it, leading me to the lessons’ page again.
- The thing is… there’s no lessons now because I deleted the single one I had.
- So instead of taking me to the deck or to the results page, it stays forever loading trying to load the lessons (which there are none unlocked).
Small bug, but worth reporting 