运行报错

[764990722]

../../flutter/.pub-cache/hosted/pub.flutter-io.cn/pull_to_refresh-1.6.5/lib/src/internals/indicator_wrap.dart:632:9: Error: A value of type 'ValueNotifier<_Enum>' can't be assigned to a variable of type 'ValueNotifier'.

• 'ValueNotifier' is from 'package:flutter/src/foundation/change_notifier.dart' ('../../flutter/packages/flutter/lib/src/foundation/change_notifier.dart').
• '_Enum' is from 'dart:core'.
  ? refresher.controller.headerMode
  ^