Flutter run now working

dialer-6104384:~/myapp$ flutter run
Connected devices:
sdk gphone64 x86 64 (mobile) • emulator-5554  • android-x64 • Android 14 (API 34) (emulator)
sdk gphone64 x86 64 (mobile) • localhost:5555 • android-x64 • Android 14 (API 34) (emulator)
[1]: sdk gphone64 x86 64 (emulator-5554)
[2]: sdk gphone64 x86 64 (localhost:5555)
Please choose one (or "q" to quit): 1

Launching lib/main.dart on sdk gphone64 x86 64 in debug mode...

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':contacts_service'.
> 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 946ms
Running Gradle task 'assembleDebug'...                           1,427ms
Error: Gradle task assembleDebug failed with exit code 1

i try to run on flutter default app, same error show. its only run perfectly when i create a new project, after some changes its not work.
i even set every thing perfectly without any error. this error come when import dependency in pubspec.yaml (i.e contacts_service)