Android Studio에서 Flutter 앱을 실행할 수 없습니다.

새 flutter 프로젝트를 만들었고 실행하면 오류가 발생합니다.

Target kernel_snapshot failed: Exception: The value of -DDartDefines is not formatted correctly.
The value must be a JSON-encoded list of strings but was:
[flutter.inspector.structuredErrors=true]
build failed.

FAILURE: Build failed with an exception.

* Where:
Script 'D:\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 882

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'D:\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
  Exception: Gradle task assembleDebug failed with exit code 1

나는 플러터 클린을 시도했고 동일한 오류

플러터 닥터 로그 :

D:\flutter\bin\flutter.bat doctor --verbose
[√] Flutter (Channel master, v1.16.4-pre.69, on Microsoft Windows [Version 10.0.18363.959], locale en-US)
    • Flutter version 1.16.4-pre.69 at D:\flutter
    • Framework revision 19e7db585d (4 months ago), 2020-04-01 11:16:01 -0700
    • Engine revision c9506cb8e9
    • Dart version 2.8.0 (build 2.8.0-dev.18.0 eea9717938)

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at C:\Users\user\AppData\Local\Android\sdk
    • Platform android-29, build-tools 29.0.3
    • 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)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor --android-licenses

[√] Android Studio (version 4.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 47.1.2
    • Dart plugin version 193.7361
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[!] VS Code (version 1.47.2)
    • VS Code at C:\Users\user\AppData\Local\Programs\Microsoft VS Code
    X Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[!] Connected device
    ! No devices available

! Doctor found issues in 3 categories.
Process finished with exit code 0