# Error Message Preventing me From Reviewing Cards

**URL:** <https://forums.ankiweb.net/t/error-message-preventing-me-from-reviewing-cards/23213>\
**Category:** Help\
**Created:** [September 17, 2022, 11:06pm UTC](https://forums.ankiweb.net/t/error-message-preventing-me-from-reviewing-cards/23213 "2022-09-17T23:06:03Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Chris2](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@Chris2](https://forums.ankiweb.net/u/Chris2)\
**Post date:** [September 17, 2022, 11:06pm UTC](https://forums.ankiweb.net/t/error-message-preventing-me-from-reviewing-cards/23213/1 "2022-09-17T23:06:03Z")

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Hi all, I keep getting an error preventing me from reviewing my cards. I would really appreciate any help as I am a med student with an exam coming up, and I rely on Anki for all my reviews. I have tried upgrading to the newest Anki and disabling all add-ons by holding shift when I open it. I also tried tools \> check database and that didn’t change anything. Do you have any idea what this could be?

Thank you so much. Here’s the error message:

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, repeating 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 to the add-on author.  
Debug info:  
Anki 2.1.54 (b6a7760c) Python 3.9.7 Qt 6.3.1 PyQt 6.3.1  
Platform: Mac 12.5  
Flags: frz=True ao=True sv=2  
Add-ons, last update check: 2022-09-17 18:53:55

Caught exception:  
Traceback (most recent call last):  
File “aqt.webview”, line 568, in handler  
File “aqt.reviewer”, line 522, in \_onAnswerButton  
File “aqt.reviewer”, line 447, in \_answerCard  
File “aqt.reviewer”, line 454, in \_after\_answering  
File “aqt.reviewer”, line 233, in nextCard  
File “aqt.reviewer”, line 342, in \_showQuestion  
File “anki.cards”, line 189, in autoplay  
File “anki.decks”, line 299, in config\_dict\_for\_deck\_id  
TypeError: argument of type ‘NoneType’ is not iterable

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**Author:** ![abdo](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/abdo/32/654_2.png) [@abdo](https://forums.ankiweb.net/u/abdo)\
**Post date:** [September 18, 2022, 10:31am UTC](https://forums.ankiweb.net/t/error-message-preventing-me-from-reviewing-cards/23213/2 "2022-09-18T10:31:04Z")

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> [@Chris2](#):
>
> ao=True

This indicates that add-ons were not actually disabled. I suggest trying to hold shift again. You should see a tooltip telling you that add-ons were disabled if it worked.

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**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:** [September 19, 2022, 4:32am UTC](https://forums.ankiweb.net/t/error-message-preventing-me-from-reviewing-cards/23213/3 "2022-09-19T04:32:16Z")

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Your AnkiWeb collection seems fine. Please sync normally, File\>Export a backup, then try force a one way sync in the preferences screen, choosing “Download”. Can you reproduce the problem after that?

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**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, 4:02am UTC](https://forums.ankiweb.net/t/error-message-preventing-me-from-reviewing-cards/23213/4 "2023-05-01T04:02:58Z")

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