# Pblm add on please solve

**URL:** <https://forums.ankiweb.net/t/pblm-add-on-please-solve/5014>\
**Category:** Add-ons\
**Created:** [November 11, 2020, 7:08pm UTC](https://forums.ankiweb.net/t/pblm-add-on-please-solve/5014 "2020-11-11T19:08:36Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ARULASSELCIYA](https://avatars.discourse-cdn.com/v4/letter/a/a9adbd/32.png) [@ARULASSELCIYA](https://forums.ankiweb.net/u/ARULASSELCIYA)\
**Post date:** [November 11, 2020, 7:08pm UTC](https://forums.ankiweb.net/t/pblm-add-on-please-solve/5014/1 "2020-11-11T19:08:36Z")

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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 on the add-on support site.  
Debug info:  
Anki 2.1.35 (84dcaa86) Python 3.8.0 Qt 5.14.2 PyQt 5.14.2  
Platform: Windows 10  
Flags: frz=True ao=True sv=1  
Add-ons, last update check: 2020-11-11 23:57:26

Caught exception:  
Traceback (most recent call last):  
File “C:\Users\ARUL SCLSYA\AppData\Roaming\Anki2\addons21\723520343\libaddon\gui\basic\dialog\_basic.py”, line 93, in accept  
self.\_onAccept()  
File “C:\Users\ARUL SCLSYA\AppData\Roaming\Anki2\addons21\723520343\libaddon\gui\dialog\_options.py”, line 130, in \_onAccept  
self.config.save()  
File “C:\Users\ARUL SCLSYA\AppData\Roaming\Anki2\addons21\723520343\libaddon\anki\configmanager.py”, line 216, in save  
saver(self.\_config[name])  
File “C:\Users\ARUL SCLSYA\AppData\Roaming\Anki2\addons21\723520343\libaddon\anki\configmanager.py”, line 457, in \_saveSynced  
self.\_getStorageObj(“synced”)[self.\_conf\_key] = config  
File “anki\config.py”, line 64, in **setitem**  
File “anki\config.py”, line 40, in set  
orjson.JSONEncodeError: Type is not JSON serializable: WrappedDict

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**Author:** ![ijgnd](https://avatars.discourse-cdn.com/v4/letter/i/bbe5ce/32.png) [@ijgnd](https://forums.ankiweb.net/u/ijgnd)\
**Post date:** [November 12, 2020, 11:36am UTC](https://forums.ankiweb.net/t/pblm-add-on-please-solve/5014/2 "2020-11-12T11:36:33Z")

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edit: see the answer below by p4nix. My answer is wrong. The problem is caused by using the old version from [here](https://ankiweb.net/shared/info/723520343) whereas glutanimate’s official version from github is much younger

&nbsp;

original answer:

this problem is caused by the add-on “Review Heatmap”.

The add-on creator won’t be notified about this thread. There’s [Review Heatmap [Official Support Thread]](https://forums.ankiweb.net/t/review-heatmap-official-support-thread/928) and [https://github.com/glutanimate/review-heatmap/issues](https://github.com/glutanimate/review-heatmap/issues)

I would check both if other users have reported the same problem and if there’s a solution. If not I would repost there and offers as much info as possible.

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**Author:** ![p4nix](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/p4nix/32/81_2.png) [@p4nix](https://forums.ankiweb.net/u/p4nix)\
**Post date:** [November 12, 2020, 11:52am UTC](https://forums.ankiweb.net/t/pblm-add-on-please-solve/5014/3 "2020-11-12T11:52:58Z")

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He’s not using Glutanimate’s review heatmap. Problem can be fixed by downloading and following the instructions here: [https://github.com/glutanimate/review-heatmap/releases/tag/v1.0.0-beta.1](https://github.com/glutanimate/review-heatmap/releases/tag/v1.0.0-beta.1)

And removing the add-on he currently has.