can't start example app from pub.dev

[yeras-is]

stack trace
`Launching lib\main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...

Compiler message:
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: Type 'ActionFactory' not found.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:279:8: Error: The method 'SnackRoute.install' has more required arguments than those of overridden method 'OverlayRoute.install'.
void install(OverlayEntry insertionPoint) {
^
/C:/flutter/packages/flutter/lib/src/widgets/routes.dart:41:8: Context: This is the overridden method ('install').
void install() {
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/routes/default_route.dart:242:9: Error: No named parameter with the name 'animation'.
animation: animation,
^^^^^^^^^
/C:/flutter/packages/flutter/lib/src/cupertino/route.dart:435:3: Context: Found this candidate, but the arguments don't match.
CupertinoFullscreenDialogTransition({
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:289:18: Error: Too many positional arguments: 0 allowed, but 1 found.
Try removing the extra positional arguments.
super.install(insertionPoint);
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: 'ActionFactory' isn't a type.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^

Compiler message:
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: Type 'ActionFactory' not found.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:279:8: Error: The method 'SnackRoute.install' has more required arguments than those of overridden method 'OverlayRoute.install'.
void install(OverlayEntry insertionPoint) {
^
/C:/flutter/packages/flutter/lib/src/widgets/routes.dart:41:8: Context: This is the overridden method ('install').
void install() {
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/routes/default_route.dart:242:9: Error: No named parameter with the name 'animation'.
animation: animation,
^^^^^^^^^
/C:/flutter/packages/flutter/lib/src/cupertino/route.dart:435:3: Context: Found this candidate, but the arguments don't match.
CupertinoFullscreenDialogTransition({
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:289:18: Error: Too many positional arguments: 0 allowed, but 1 found.
Try removing the extra positional arguments.
super.install(insertionPoint);
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: 'ActionFactory' isn't a type.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.

FAILURE: Build failed with an exception.

• Where:
  Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 883

• What went wrong:
  Execution failed for task ':app:compileFlutterBuildDebug'.

Process 'command 'C:\flutter\bin\flutter.bat'' finished with non-zero exit value 1

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 12s
Exception: Gradle task assembleDebug failed with exit code 1
`

[jonataslaw]

stack trace
`Launching lib\main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...

Compiler message:
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: Type 'ActionFactory' not found.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:279:8: Error: The method 'SnackRoute.install' has more required arguments than those of overridden method 'OverlayRoute.install'.
void install(OverlayEntry insertionPoint) {
^
/C:/flutter/packages/flutter/lib/src/widgets/routes.dart:41:8: Context: This is the overridden method ('install').
void install() {
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/routes/default_route.dart:242:9: Error: No named parameter with the name 'animation'.
animation: animation,
^^^^^^^^^
/C:/flutter/packages/flutter/lib/src/cupertino/route.dart:435:3: Context: Found this candidate, but the arguments don't match.
CupertinoFullscreenDialogTransition({
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:289:18: Error: Too many positional arguments: 0 allowed, but 1 found.
Try removing the extra positional arguments.
super.install(insertionPoint);
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: 'ActionFactory' isn't a type.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^

Compiler message:
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: Type 'ActionFactory' not found.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:279:8: Error: The method 'SnackRoute.install' has more required arguments than those of overridden method 'OverlayRoute.install'.
void install(OverlayEntry insertionPoint) {
^
/C:/flutter/packages/flutter/lib/src/widgets/routes.dart:41:8: Context: This is the overridden method ('install').
void install() {
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/routes/default_route.dart:242:9: Error: No named parameter with the name 'animation'.
animation: animation,
^^^^^^^^^
/C:/flutter/packages/flutter/lib/src/cupertino/route.dart:435:3: Context: Found this candidate, but the arguments don't match.
CupertinoFullscreenDialogTransition({
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/snackbar/snack_route.dart:289:18: Error: Too many positional arguments: 0 allowed, but 1 found.
Try removing the extra positional arguments.
super.install(insertionPoint);
^
../../AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/get-2.0.1/lib/src/root/root_widget.dart:82:23: Error: 'ActionFactory' isn't a type.
final Map<LocalKey, ActionFactory> actions;
^^^^^^^^^^^^^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.

FAILURE: Build failed with an exception.

• Where:
  Script 'C:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 883
• What went wrong:
  Execution failed for task ':app:compileFlutterBuildDebug'.

Process 'command 'C:\flutter\bin\flutter.bat'' finished with non-zero exit value 1

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
• Get more help at https://help.gradle.org

BUILD FAILED in 12s
Exception: Gradle task assembleDebug failed with exit code 1
`

You are using the Dev/Master version of Flutter.
Read the documentation, you must use Flutter 2.0.2-dev version of Get

[alirezat66]

do you solve this problem? If yes, please describe your soloution.

[jonataslaw]

do you solve this problem? If yes, please describe your soloution.

There is no "problem", just update your version of Flutter, it is legacy and you cannot use any updated plugin/packages.