**已关闭。**此问题不符合Stack Overflow guidelines。目前不接受答复。

这个问题似乎不是关于在help center定义的范围内编程。
昨天关门了。
Improve this question
这里是错误！我从来没有在我的pubspec.yaml中使用过下面这些错误包

../../.pub-cache/hosted/pub.dev/chewie_audio- 
    1.3.0/lib/src/material_controls.dart:242:50: Error: The getter 'accentColor' 
    isn't 
    defined for the class 'ThemeData'.

    
    ../../.pub-cache/hosted/pub.dev/flutter_math_fork- 
    0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:198:29: Error: The 
    argument 
    type 'void Function(DragEndDetails)' can't be assigned to the parameter type 
    'void 
     Function(TapDragEndDetails)?'.
     - 'DragEndDetails' is from 'package:flutter/src/gestures/drag_details.dart' 
    ('../flutter/packages/flutter/lib/src/gestures/drag_details.dart').
     - 'TapDragEndDetails' is from 
    'package:flutter/src/widgets/tap_and_drag_gestures.dart' 
    ('../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
    onDragSelectionEnd: onDragSelectionEnd,
                        ^
    Failed to compile application.

看起来错误来自其他包！我不知道它是从哪里来的！
请提出解决方案！谢谢！