Type Casting Error: '_Map<String, dynamic>' is not a Subtype of 'T?'

[AmeerAmjed]

Package

dio

Version

5.4.3+1

Operating-System

Android, iOS

Adapter

Default Dio

Output of flutter doctor -v

[✓] Flutter (Channel stable, 3.22.1, on macOS 14.4.1 23E224 darwin-arm64, locale en-IQ)
    • Flutter version 3.22.1 on channel stable
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision a14f74ff3a (12 days ago), 2024-05-22 11:08:21 -0500
    • Engine revision 55eae6864b
    • Dart version 3.4.1
    • DevTools version 2.34.3

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/ameeramjed/Library/Android/sdk
    • Platform android-34, build-tools 34.0.0
    • Java binary at: /Applications/Android Studio Preview.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11572160)
    • All Android licenses accepted.

[!] Xcode - develop for iOS and macOS (Xcode 15.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15E204a
    ✗ Unable to get list of installed Simulator runtimes.
    • CocoaPods version 1.14.3

[!] Android Studio (version unknown)
    • Android Studio at /Applications/Android Studio Preview.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    ✗ Unable to determine Android Studio version.
    • Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11572160)

[✓] IntelliJ IDEA Community Edition (version 2024.1.1)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] VS Code (version 1.89.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.88.0

[✓] Connected device (2 available)


[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 2 categories.

Dart Version

3.4.1

Steps to Reproduce

I need to convert the data response to a specific type T .

client.get<TodosResponse>(
        '/todos',
        queryParameters: {
          "skip": skip,
          "limit": limit,
        },
      ),

but show this error
Error: type '_Map<String, dynamic>' is not a subtype of type 'TodosResponse?' in type cast.
I do not need to use any function or more steps because I use base class and just pass request to use the same error Handel I need to cast without any logic using passing T.
How can handle that?
Thank you for helping me.

Expected Result

Error: type '_Map<String, dynamic>' is not a subtype of type 'TodosResponse?' in type cast.

Actual Result

Return Object of TodosResponse.

[AlexV525]

There should be tutorials about converting the response into your abstracted classes. Please search any forums for help, we use issues to track bugs/features.