# Heatmap add-on calender mode and color scheme error

**URL:** <https://forums.ankiweb.net/t/heatmap-add-on-calender-mode-and-color-scheme-error/157>\
**Category:** Add-ons\
**Created:** [June 14, 2020, 1:36pm UTC](https://forums.ankiweb.net/t/heatmap-add-on-calender-mode-and-color-scheme-error/157 "2020-06-14T13:36:40Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![abdel](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@abdel](https://forums.ankiweb.net/u/abdel)\
**Post date:** [June 14, 2020, 1:36pm UTC](https://forums.ankiweb.net/t/heatmap-add-on-calender-mode-and-color-scheme-error/157/1 "2020-06-14T13:36:40Z")

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When i try to change the color scheme or the caleder mode on the heatmap and press ok to finalize the changes this message pops on

 ![1592141664946-523302300](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/458da04a601ee04d78d34e661db439456c152f7d.jpeg)  
I’ve searched on Google about this didn’t find a thing what’ could i do to fix it

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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:** [June 14, 2020, 1:49pm UTC](https://forums.ankiweb.net/t/heatmap-add-on-calender-mode-and-color-scheme-error/157/2 "2020-06-14T13:49:17Z")

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Have you updated Anki since last changing that color scheme? If so, do you use the newest version of review heatmap available at: [https://github.com/glutanimate/review-heatmap/releases](https://github.com/glutanimate/review-heatmap/releases) ?  
I remember a very similar error. It was fixed with the new version.

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**Author:** ![glutanimate](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/glutanimate/32/97_2.png) [@glutanimate](https://forums.ankiweb.net/u/glutanimate)\
**Post date:** [June 14, 2020, 11:58pm UTC](https://forums.ankiweb.net/t/heatmap-add-on-calender-mode-and-color-scheme-error/157/3 "2020-06-14T23:58:29Z")

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Thanks for chiming in @p4nix! Yep, upgrading to v1.0.0 should fix this error (which is present on Anki versions 2.1.24 and up).

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**Author:** ![abdel](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@abdel](https://forums.ankiweb.net/u/abdel)\
**Post date:** [June 15, 2020, 5:28pm UTC](https://forums.ankiweb.net/t/heatmap-add-on-calender-mode-and-color-scheme-error/157/4 "2020-06-15T17:28:47Z")

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thanks so much @p4nix i’ve upgraded it to v1.0.0 the latest of glutanimate and it is fixed