no updates why?

[fisforfaheem]

Launching lib\main.dart on Edge in debug mode...
lib\main.dart:1
/C:/flutter/.pub-cache/hosted/pub.dartlang.org/charts_flutter-0.10.0/lib/src/behaviors/legend/legend_entry_layout.dart:134:45: Error: The getter 'body1' isn't defined for the class 'TextTheme'.

• 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart').
  package:flutter/…/material/text_theme.dart:1
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'body1'.
  color ??= Theme.of(context).textTheme.body1.color;
  ^^^^^