Execution failed for task ':transformClassesWithDexForDebug'. ionic 3 please helpp

Question

BUILD FAILED

Total time: 1 mins 10.277 secs FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':transformClassesWithDexForDebug'.

  com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zznv;

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Error: cmd: Command failed with exit code 1 Error output: Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details.

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':transformClassesWithDexForDebug'.

  com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zznv;

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

Answer 1

Go to platforms/android and open build.gradle.

Then add multiDexEnabled true to defaultConfig.

It should look like this at the end :

defaultConfig {
    versionCode cdvVersionCode ?: new BigInteger("" + privateHelpers.extractIntFromManifest("versionCode"))
    applicationId privateHelpers.extractStringFromManifest("package")

    if (cdvMinSdkVersion != null) {
        minSdkVersion cdvMinSdkVersion
    }

    multiDexEnabled true
}

EDIT

You might have a different issue after this. I suggest you to clean your project by removing every platforms, the /platforms and /plugins folders, and then reinstall everything.