Anki doesn´t continuos the study mode..... It´s crash

Anki Help
1

When I click the button to study the first card show, and when I click to show the answer a message appears. The message that appears is the showed below:

An error occurred. Please use Tools > Check Database to see if that fixes the problem.

If problems persist, please report the problem on our [support site]Please copy and paste the information below into your report.

Anki 2.1.49 (dc80804a) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2

Platform: Windows 7

Flags: frz=True ao=False sv=2

Add-ons, last update check: 2023-02-16 11:16:55

Caught exception:

Traceback (most recent call last):

File “aqt\webview.py”, line 541, in handler

File “aqt\reviewer.py”, line 704, in _onTypedAnswer

File “aqt\reviewer.py”, line 383, in _showAnswer

File “aqt\reviewer.py”, line 759, in _showEaseButtons

File “aqt\reviewer.py”, line 846, in _answerButtons

File “aqt\reviewer.py”, line 832, in but

File “aqt\reviewer.py”, line 856, in _buttonTime

File “anki\scheduler\v2.py”, line 1140, in nextIvlStr

File “anki\scheduler\v2.py”, line 1035, in nextIvl

File “anki\scheduler\v2.py”, line 910, in _nextRevIvl

TypeError: ‘>’ not supported between instances of ‘NoneType’ and ‘int’

2

Possible Solutions (try in sequential order top to bottom):

3

Thank you, however none of this solution works for me.

Now the message change and shows:

A fatal error occurred, and Anki must close. Please report this message on the forums.
Anki 2.1.49 (dc80804a) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2
Platform: Windows 7
Flags: frz=True ao=False sv=?
Add-ons, last update check: 2023-02-20 07:15:49

Caught exception:
Traceback (most recent call last):
File “aqt\taskman.py”, line 101, in on_closures_pending
File “aqt\taskman.py”, line 71, in
File “aqt\taskman.py”, line 90, in wrapped_done
File "aqt\operations_init.py", line 114, in wrapped_done
File “aqt\main.py”, line 1093, in update_undo_actions
File “aqt\main.py”, line 1084, in undo_actions_info
File “anki\collection.py”, line 849, in undo_status
File “anki\collection.py”, line 931, in check_backend_undo_status
File “anki_backend\generated.py”, line 888, in get_undo_status
File "anki_backend_init.py", line 126, in _run_command
pyo3_runtime.PanicException: called Result::unwrap() on an Err value: PoisonError { … }

4

In case you are using a shared deck: Anki 2.1.49 Fatal error when opening a familiar deck - #3 by dae

5

The latest error you pasted indicates you’re still on 2.1.49. Please try with the latest Anki version.