After implement the library i got that issue

[sudiptachannelplay]

../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:187:5: Error: Type 'Uint8List' not found.
Uint8List byteArray, {
^^^^^^^^^
../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:271:9: Error: Type 'Uint8List' not found.
final Uint8List? byteArray;
^^^^^^^^^
../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:435:34: Error: Type 'Uint8List' not found.
Future<ui.Image> _convertImage(Uint8List img) async {
^^^^^^^^^
../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:736:10: Error: Type 'Uint8List' not found.
Future<Uint8List?> exportImage() async {
^^^^^^^^^
../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:187:5: Error: 'Uint8List' isn't a type.
Uint8List byteArray, {
^^^^^^^^^
../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:271:9: Error: 'Uint8List' isn't a type.
final Uint8List? byteArray;
^^^^^^^^^
../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:399:36: Error: The getter 'Uint8List' isn't defined for the class 'ImagePainterState'.

• 'ImagePainterState' is from 'package:image_painter/src/_paint_over_image.dart' ('../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'Uint8List'.
  _image = await _convertImage(Uint8List.view(img.buffer));
  ^^^^^^^^^
  ../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:435:34: Error: 'Uint8List' isn't a type.
  Future<ui.Image> _convertImage(Uint8List img) async {
  ^^^^^^^^^
  ../../../FlutterSdk/flutter/.pub-cache/hosted/pub.dartlang.org/image_painter-0.6.0/lib/src/_paint_over_image.dart:844:30: Error: Member not found: 'Checkbox.adaptive'.
  Checkbox.adaptive(
  ^^^^^^^^

[towcar]

Whats your SDK version for flutter?

0.6.0 requires min 2.15
0.5.0 requires min 2.12