Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain

[Muti]

Hello there,

The flutter doctor -v output shows that there is no problem below, but when I say flutter run, I get a gradle error.

flutter doctor -v (Terminal Output)

[√] Flutter (Channel stable, 2.0.2, on Microsoft Windows [Version 10.0.19042.867], locale en-TR)

    Flutter version 2.0.2 at C: \ src \ flutter

    Framework revision 8962f6dc68 (3 days ago), 2021-03-11 13:22:20 -0800

    Engine revision 5d8bf811b3

    Dart version 2.12.1

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)

    • Android SDK at C: \ Users \ Tr \ AppData \ Local \ Android \ sdk

    • Platform android-30, build-tools 30.0.3

    • Java binary at: C: \ Program Files \ Android \ Android Studio \ jre \ bin \ java

    Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

    • All Android licenses accepted.

[√] Chrome - develop for the web

    • Chrome at C: \ Program Files \ Google \ Chrome \ Application \ chrome.exe

[√] Android Studio (version 4.1.0)

    • Android Studio at C: \ Program Files \ Android \ Android Studio

    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

    Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] VS Code (version 1.54.2)

    VS Code at C: \ Users \ Tr \ AppData \ Local \ Programs \ Microsoft VS Code

    Flutter extension version 3.20.0

[√] Connected device (3 available)

    • AOSP on IA Emulator (mobile) • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)

    • Chrome (web) • chrome • web-javascript • Google Chrome 89.0.4389.82

    • Edge (web) • edge • web-javascript • Microsoft Edge 88.0.705.63

• No issues found!

Terminal Output: when I say flutter run;

 Using hardware rendering with device AOSP on IA Emulator. If you notice graphics artifacts, consider enabling software rendering with

"--enable-software-rendering".

Launching lib \ main.dart on AOSP on IA Emulator in debug mode ...

'iOS' is not recognized as an internal or external command,

operable program or batch file.

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain

Running Gradle task 'assembleDebug' ...

Running Gradle task 'assembleDebug' ... Done 1.577ms

Exception: Gradle task assembleDebug failed with exit code 1

Please can someone help?

Yours truly