[Flutter/dart]The getter 'body1' isn't defined for the class 'TextTheme'

Phenomenon

I got a title error after updating flutter to 2.5.1.

According to the error log, the cause seems to be charts-flutter.

Cause and Solution

With the version upgrade of flutter, some duplicated ones became an error.

It seems that charts-flutter doesn't support it.

When I looked at the github page, the following was described as a provisional response.

charts_flutter: ^0.11.0

to

charts_flutter:
  git:
    url: https://github.com/google/charts.git
    path: charts_flutter

With this I can build without error.

Lastly

It seems that charts-flutter hasn't been maintained and updated recently, so I have to think about adopting it in new apps ...