Compile time error: DialogThemeData and the method 'withValues'

[Rajuavs]

Hi friend, I got Error as bellow:

../../.pub-cache/hosted/pub.dev/ndialog-4.4.1+1/lib/src/progress_dialog.dart:287:11: Error: 'DialogThemeData' isn't a type.
final DialogThemeData dialogTheme = DialogTheme.of(context);
^^^^^^^^^^^^^^^
../../.pub-cache/hosted/pub.dev/ndialog-4.4.1+1/lib/src/utils.dart:4:47: Error: The method 'withValues' isn't defined for the class 'Color'.

• 'Color' is from 'dart:ui'.
  Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
  Color get generalBarrierColor => Colors.black.withValues(alpha: .5);

I Resolved as bellow:
1).
page: utils.dart
Color get generalBarrierColor => Colors.black.withValues(alpha: .5);
replaced with "withOpacity"
Color get generalBarrierColor => Colors.black.withOpacity(0.5);

2).
page: progress_dialog.dart
error line: 287 :
final DialogThemeData dialogTheme = DialogTheme.of(context);
removed "DialogThemeData"
final dialogTheme = DialogTheme.of(context);

Update your package, kindly, as it can cause problems for others.