I've been using Anki for years. Anki has recently changed its version numbers to year.month. From version 23.10, FSRS algorithm is implemented for scheduling reviews. Without thinking too much, I upgraded to the latest version.

Not surprisingly, this upgrade broke a few addons on my computer:

Fixing them was easier than I had thought.

When you start Anki, you are greeted with this alert if there's a bug in an addon. ⋯