# Heatmap Settings Causing Error **URL:** \ **Category:** Add-ons\ **Created:** [August 20, 2020, 11:25pm UTC](https://forums.ankiweb.net/t/heatmap-settings-causing-error/2515 "2020-08-20T23:25:13Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Lugaria](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@Lugaria](https://forums.ankiweb.net/u/Lugaria)\ **Post date:** [August 20, 2020, 11:25pm UTC](https://forums.ankiweb.net/t/heatmap-settings-causing-error/2515/1 "2020-08-20T23:25:13Z")
Hello, I am very new to Anki, and recently installed the Heatmap Addons. When I tried to change the color scheme, I was able to open the “review heatmap settings” tab and change the color scheme option just fine. However, when I click “OK”, the following error comes up. I have tried restarting Anki, but I am not sure what else to try. Heatmap is the only addon I have installed. Thanks for any help in advance! 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 2.1.30 (06a69c25) Python 3.8.0 Qt 5.14.1 PyQt 5.14.1 Platform: Windows 10 Flags: frz=True ao=True sv=1 Add-ons, last update check: 2020-08-20 16:26:55 Caught exception: Traceback (most recent call last): File “C:\Users\luke\AppData\Roaming\Anki2\addons21\1722241614\libaddon\gui\basic\dialog\_basic.py”, line 93, in accept self.\_onAccept() File “C:\Users\luke\AppData\Roaming\Anki2\addons21\1722241614\libaddon\gui\dialog\_options.py”, line 130, in \_onAccept self.config.save() File “C:\Users\luke\AppData\Roaming\Anki2\addons21\1722241614\libaddon\anki\configmanager.py”, line 216, in save saver(self.\_config[name]) File “C:\Users\luke\AppData\Roaming\Anki2\addons21\1722241614\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 ---
**Author:** ![kelciour](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/kelciour/32/14770_2.png) [@kelciour](https://forums.ankiweb.net/u/kelciour)\ **Post date:** [August 20, 2020, 11:48pm UTC](https://forums.ankiweb.net/t/heatmap-settings-causing-error/2515/2 "2020-08-20T23:48:33Z")
This is a no-brainer. Please read the first review, remove the add-on and install the official version. > 1722241614 > As add-ons are programs downloaded from the internet, they are potentially malicious. You should only download add-ons you trust. > ![image](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/2X/7/768ea0c4a3a4ba878fac2041eddbad8e0f0d1494.png) 50 > Reuploading the beta release here is not cool, especially without any kind of attribution. Please take it down. > > For anyone else reading this: You can grab the official beta releases of Review Heatmap here → [Releases · glutanimate/review-heatmap · GitHub](https://github.com/glutanimate/review-heatmap/releases) . Please note that these are beta releases, and so they are bound to still have issues that need to be addressed – which is why they should not be put on AnkiWeb. > > – Glutanimate ---
**Author:** ![Lugaria](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@Lugaria](https://forums.ankiweb.net/u/Lugaria)\ **Post date:** [August 20, 2020, 11:54pm UTC](https://forums.ankiweb.net/t/heatmap-settings-causing-error/2515/3 "2020-08-20T23:54:30Z")
Wow I can’t believe I didn’t see those reviews! 😂😅 Thank you so much.