Error keeps popping up when I review

I have disabled all add-ons but every time I click “Good” on a card, an error window pops up saying this.

"Anki 2.1.49 (dc80804a) 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: 2022-11-24 00:02:06

Caught exception:
Traceback (most recent call last):
File “aqt\”, line 541, in handler
File “aqt\”, line 704, in _onTypedAnswer
File “aqt\”, line 383, in _showAnswer
File “aqt\”, line 759, in _showEaseButtons
File “aqt\”, line 846, in _answerButtons
File “aqt\”, line 832, in but
File “aqt\”, line 856, in _buttonTime
File “anki\scheduler\”, line 1140, in nextIvlStr
File “anki\scheduler\”, line 1028, in nextIvl
File “anki\scheduler\”, line 864, in _lapseIvl
TypeError: unsupported operand type(s) for *: ‘int’ and ‘NoneType’

Please follow the steps on When problems occur - Frequently Asked Questions

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