flutter_appcenter_bundle: ^3.3.2 gives error release mode

[mahfuj-rahaman]

Hi
I am getting an error when I try to publish my app in release mode. I am shearing my release please help

buildTypes {
debug {
signingConfig signingConfigs.debug
}
release {

        signingConfig signingConfigs.release
		
		applicationVariants.all { variant ->
            variant.outputs.all { output ->
                def type = variant.buildType.name
                output.outputFileName = "app-${type}.apk"
            }
        }
    }		
}

Error Message:
flutter_appcenter_bundle-3.3.2/android/src/main/kotlin/com/github/hanabi1224/flutter_appcenter_bundle/FlutterAppcenterBundlePlugin.kt:43:47 Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type Activity?