Error message for children of of filtered deck

Create a filtered deck “filtered”.
From either “deck chooser” or “add note>deck”, create a deck “filtered::A”

And instead of a message which can be understood by user, you’ll get


An error occurred. Please start Anki while holding down the shift key, which will temporarily disable the add-ons you have installed.

If the issue only occurs when add-ons are enabled, please use the Tools>Add-ons menu item to disable some add-ons and restart Anki, repeat until you discover the add-on that is causing the problem.

When you’ve discovered the add-on that is causing the problem, please report the issue on the add-ons section of our support site.

Debug info:
Anki 2.1.40 (cf446733) Python 3.8.1 Qt 5.15.1 PyQt 5.15.1
Platform: Linux
Flags: frz=True ao=True sv=1
Add-ons, last update check: 2021-02-13 16:37:39

Caught exception:

Traceback (most recent call last):
File “anki/”, line 248, in update
File “anki/”, line 241, in add_or_update_deck_legacy
File “anki/”, line 256, in _run_command
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File “aqt/”, line 161, in onAddDeck
File “anki/”, line 127, in id
File “anki/”, line 252, in update
anki.errors.DeckRenameError: Couldn’t rename deck: deck was filtered

I’d suggest replacing it by something which is easier to read/understand. The same way that moving/renaming a deck to move it under a filtered deck would just show “deck was filtered” (which honestly is not so clear either if you don’t know anki internal, but less frightening)


Thanks Arthur, added to Clean up filtered deck error messages · Issue #1024 · ankitects/anki · GitHub