Comment 1 for bug 1897283

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Satoru Takeuchi (satoru-takeuchi) wrote :

I encountered the same problem.

> To solve this issue it seems that you have to upgrade python3-matplotlib package at least to version 3.3 (the version packaged for ubuntu 20.10, I think)

v3.1.3 also supports pillow >= 7.0. This version might be more appropriate.

https://github.com/matplotlib/matplotlib/releases/tag/v3.1.3
> - support pillow >= 7

Original fix.
https://github.com/matplotlib/matplotlib/pull/16086

This fix is applied to v3.1.3
https://github.com/matplotlib/matplotlib/blob/v3.1.3/lib/matplotlib/backend_bases.py#L57