Not able to create android apk after installing iadvize in pubspec

[amandevsingh]

Execution failed for task ':iadvize_flutter_sdk:generateReleaseRFile'.

Could not resolve all files for configuration ':iadvize_flutter_sdk:releaseCompileClasspath'.
Could not resolve com.iadvize:iadvize-sdk:2.11.0.
Required by:
project :iadvize_flutter_sdk