Error upon FSRS activation on Anki (23.10)

I get the following error when I press save after adjusting the settings:

A fatal error occurred, and Anki must close. Please report this message on the forums.
Anki 23.10 (51a10f09) Python 3.9.15 Qt 5.15.2 PyQt 5.15.5
Platform: Windows-10-10.0.22621
Flags: frz=True ao=True sv=?
Add-ons, last update check: 2023-11-02 01:27:14

Caught exception:
Traceback (most recent call last):
File “aqt.progress”, line 118, in handler
File “aqt.taskman”, line 126, in
File “aqt.operations”, line 122, in wrapped_done
File “concurrent.futures._base”, line 439, in result
File “concurrent.futures._base”, line 391, in __get_result
File “concurrent.futures.thread”, line 58, in run
File “aqt.operations”, line 107, in wrapped_op
File “aqt.operations.deck”, line 88, in
File “anki.decks”, line 297, in update_deck_configs
File “anki._backend_generated”, line 1557, in update_deck_configs_raw
File “anki._backend”, line 152, in _run_command
pyo3_runtime.PanicException: called Option::unwrap() on a None value

Card id 1503351390072 appears to have an invalid revlog - it lists a ‘learn’ step with a button of 0. Did you use some scheduling-related add-on to change it? You appear to have 18 other cases like this.

Yes, the learn step with button 0 is due to rescheduling. The rescheduling on that card was done in 2021, so it must have been the rememorize addon ( before rescheduling became a native feature in Anki.

Thanks, will be fixed in the next build.

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.