flutter：无法运行基本的 hello world 程序，因为“任务 ':app:packageDebug' 的执行失败”。 '

Question

I'm a total beginner to flutter and android studio and as I was trying to run a very basic hello world program I got this:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:packageDebug'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
   > java.io.FileNotFoundException: D:\flutter\newapp\build\app\intermediates\signing_config\debug\out\signing-config.json (Access is denied)

* 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 16s
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:packageDebug'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
   > java.io.FileNotFoundException: D:\flutter\newapp\build\app\intermediates\signing_config\debug\out\signing-config.json (Access is denied)

* 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 2s
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...
Exception: Gradle task assembleDebug failed with exit code 1

I've tried flutter clean but that didn't work. I manually cleared cache through android studio that didn't work either. I finally rebooted my machine and that didn't work either.

I'm out of luck and solutions. Any help would be appreciated.

(running windows 10)

Answer 1

Go to the route D:\flutter\newapp\build\app\intermediates\signing_config\debug\out\ and delete the file signing-config.json then run again.

Answer 2

I would recommend Redownloading the flutter SDK, and use Microsoft VSC instead of Android Studio.Its lightweight and dosent pose much stress on your PC.

Answer 3

I had the same error, the command flutter clean worked.