Error message when trying Custom Study on Windows

…I get the error report, but I can still custom study if I ignore it and continue. Still, it would be good to know if something is broken.

I’ve done Tools → Check Database, but the issue persists

Anki 2.1.44 (b2b3275f) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2
Platform: Windows 10
Flags: frz=True ao=False sv=2
Add-ons, last update check: 2021-07-25 12:52:45

Caught exception:
Traceback (most recent call last):
File “aqt\”, line 36, in cmd
File “aqt\”, line 135, in _onCmd
File “aqt\”, line 580, in _onBridgeCmd
File “aqt\”, line 85, in _linkHandler
File “aqt\”, line 261, in onStudyMore
File “aqt\”, line 28, in init
KeyError: ‘conf’

Please see if you can reproduce it with the 2.1.45 release candidate: