# Fatal Error Message

**URL:** <https://forums.ankiweb.net/t/fatal-error-message/17992>\
**Category:** Help\
**Created:** [March 2, 2022, 9:57pm UTC](https://forums.ankiweb.net/t/fatal-error-message/17992 "2022-03-02T21:57:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JJJ1](https://avatars.discourse-cdn.com/v4/letter/j/d6d6ee/32.png) [@JJJ1](https://forums.ankiweb.net/u/JJJ1)\
**Post date:** [March 2, 2022, 9:57pm UTC](https://forums.ankiweb.net/t/fatal-error-message/17992/1 "2022-03-02T21:57:27Z")

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When I was in the middle of creating new cards I received this error twice in a row.

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 10  
Flags: frz=True ao=False sv=?  
Add-ons, last update check: 2022-03-02 16:09:38

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\operations\_init_.py", line 214, in wrapped\_done  
File “concurrent\futures\_base.py”, line 432, in result  
File “concurrent\futures\_base.py”, line 388, in _get\_result  
File “concurrent\futures\thread.py”, line 57, in run  
File "aqt\operations\_init.py", line 199, in wrapped\_op  
File “aqt\editor.py”, line 544, in   
File “anki\notes.py”, line 191, in fields\_check  
File “anki\_backend\generated.py”, line 355, in note\_fields\_check  
File "anki\_backend\_init_.py", line 126, in \_run\_command  
pyo3\_runtime.PanicException: called `Result::unwrap()` on an `Err` value: PoisonError { … }

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<div class="post-metadata">

**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\
**Post date:** [March 3, 2022, 10:20am UTC](https://forums.ankiweb.net/t/fatal-error-message/17992/2 "2022-03-03T10:20:13Z")

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Please restart/force close Anki. If the issue keeps occurring after restarting, please start Anki with a console, and paste the first error printed in the console when it occurs:

[https://docs.ankiweb.net/platform/windows/startup-issues.html#debugging](https://docs.ankiweb.net/platform/windows/startup-issues.html#debugging)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\
**Post date:** [May 1, 2023, 4:30am UTC](https://forums.ankiweb.net/t/fatal-error-message/17992/3 "2023-05-01T04:30:01Z")

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