Random error when starting study

Anon 27e

Error 
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 2.1.60 (76d88073) Python 3.9.15 Qt 6.4.2 PyQt 6.4.0
Platform: Linux-5.15.0-60-generic-x86_64-with-glibc2.31
Flags: frz=True ao=True sv=2
Add-ons, last update check: 2023-03-14 00:18:50
Add-ons possibly involved: ⁨Migaku Kanji GOD⁩

Caught exception:
Traceback (most recent call last):
  File "aqt.webview", line 46, in cmd
  File "aqt.webview", line 153, in _onCmd
  File "aqt.webview", line 662, in _onBridgeCmd
  File "aqt.overview", line 92, in _linkHandler
  File "aqt.main", line 711, in moveToState
  File "_aqt.hooks", line 4684, in __call__
  File "/home/rizhiy/.local/share/Anki2/addons21/Migaku Kanji GOD/reviewer.py", line 63, in learn_ahead_refresh_on_review_start
    aqt.mw.migaku_kanji_db.refresh_learn_ahead()
  File "/home/rizhiy/.local/share/Anki2/addons21/Migaku Kanji GOD/kanji.py", line 427, in refresh_learn_ahead
    self.make_cards_from_characters(ct, new, None)
  File "/home/rizhiy/.local/share/Anki2/addons21/Migaku Kanji GOD/kanji.py", line 621, in make_cards_from_characters
    aqt.mw.requireReset()
  File "aqt.main", line 837, in requireReset
  File "aqt.main", line 822, in reset
  File "aqt.main", line 774, in _synthesize_op_did_execute_from_reset
  File "_aqt.hooks", line 3547, in __call__
  File "aqt.main", line 782, in on_operation_did_execute
  File "aqt.reviewer", line 207, in op_executed
  File "aqt.reviewer", line 179, in refresh_if_needed
  File "aqt.reviewer", line 238, in nextCard
AttributeError: 'Reviewer' object has no attribute '_reps'

Anon 27e

@juliusmigaku Will try, thank you

JuliusMigaku

@anon-27e Please try to use Anki 2.1.49, we will try to support the latest Anki versions soon