FAILURE: Build Failed with an exception error when running app-CodePudding

I am getting this error whenever I am trying to run my app,it was working fine yesterday then it just started doing this.

Launching lib\main.dart on SM M025F in debug mode...
lib\main.dart:1

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:mergeDexDebug'.
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
   > Failed to transform classes.jar (project :fluttertoast) to match attributes {artifactType=android-dex, com.android.build.api.attributes.BuildTypeAttr=debug, com.android.build.api.attributes.VariantAttr=debug, dexing-enable-desugaring=true, dexing-incremental-transform=false, dexing-is-debuggable=true, dexing-min-sdk=16, org.gradle.category=library, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime, org.jetbrains.kotlin.platform.type=androidJvm}.
      > Could not isolate parameters com.android.build.gradle.internal.dependency.JetifyTransform$Parameters_Decorated@4914359b of artifact transform JetifyTransform
         > Current thread does not hold the state lock for project :app

* 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 44s
Exception: Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

CodePudding user response：

It turns out this comes from the minSdkVersion used. If this is set to 20 or lower, you need to configure your app for multiDex support.

defaultConfig {
        applicationId "com.example.app"
        minSdkVersion 21
        targetSdkVersion 30
    }

So, if you app is not intended to be used in Android version prior to 5.0, setting the minSdkVersion number to 21 will easily fix this issue.

CodePudding user response：

I would clear Android Studio cache by going to File --> Invalidate Caches and rebuild Gradle file.

Check this video for gradle.