flutter build apk --flavor development --target lib/main_development.dart

[Jules369-ZM]

FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring project ':ua_client_hints'.

Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
Namespace not specified. Specify a namespace in the module's build file. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.

 If you've specified the package attribute in the source AndroidManifest.xml, you can use the AGP Upgrade Assistant to migrate to the namespace value in the build file. Refer to https://d.android.com/r/tools/upgrade-assistant/agp-upgrade-assistant for general information about using the AGP Upgrade Assistant.

• 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 17s

[Paradoxu]

Hi, did you find a solution? I'm facing the same problem

[kwent]

On my side

Running Gradle task 'assembleStagingRelease'...                 

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/xx/.pub-cache/hosted/pub.dev/ua_client_hints-1.3.1/android/build.gradle' line: 46

* What went wrong:
A problem occurred evaluating project ':ua_client_hints'.
> Could not find method jvmToolchain() for arguments [17] on extension 'kotlin' of type org.jetbrains.kotlin.gradle.dsl.KotlinAndroidProjectExtension.

* 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 23s
Running Gradle task 'assembleStagingRelease'...                    24.1s
Gradle task assembleStagingRelease failed with exit code 1