getting error while building android apps from flutter with android ads plugin

this is the error which i get while running the command flutter build apk --release

* What went wrong: A problem occurred configuring project ':google_mobile_ads'. > Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.    > Namespace not specified. Please specify a namespace in the module's build.gradle file like so:      android {          namespace 'com.example.namespace'      } 

but i have it in my gradle file . i am giving here my app level build.gradle file

plugins {     id "com.android.application"     id "kotlin-android"     id "dev.flutter.flutter-gradle-plugin" } def localProperties = new Properties() def localPropertiesFile = rootProject.file('local.properties') if (localPropertiesFile.exists()) {     localPropertiesFile.withReader('UTF-8') { reader ->         localProperties.load(reader)     } } def flutterVersionCode = localProperties.getProperty('flutter.versionCode') if (flutterVersionCode == null) {     flutterVersionCode = '1' } def flutterVersionName = localProperties.getProperty('flutter.versionName') if (flutterVersionName == null) {     flutterVersionName = '1.0' } android {     namespace "com.example.tripp"     compileSdkVersion = 33     ndkVersion flutter.ndkVersion     compileOptions {         sourceCompatibility JavaVersion.VERSION_1_8         targetCompatibility JavaVersion.VERSION_1_8     }     kotlinOptions {         jvmTarget = '1.8'     }     sourceSets {         main.java.srcDirs += 'src/main/kotlin'     }     defaultConfig {         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).         applicationId "com.busdekho.tripp"         // You can update the following values to match your application needs.         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.         minSdkVersion 33         targetSdkVersion flutter.targetSdkVersion         versionCode flutterVersionCode.toInteger()         versionName flutterVersionName                  buildFeatures {         buildConfig = true         }     }     buildTypes {         release {             // TODO: Add your own signing config for the release build.             // Signing with the debug keys for now, so `flutter run --release` works.             signingConfig signingConfigs.debug         }     } } flutter {     source '../..' } dependencies {     implementation 'com.google.android.gms:play-services-ads:22.3.0' } 

the below one is my project level gradle file which have small additions

buildscript {     ext.kotlin_version = '1.7.10'     repositories {         google()         mavenCentral()     }     dependencies {         classpath 'com.android.tools.build:gradle:8.0.0'         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"     } } allprojects {     repositories {         google()         mavenCentral()     } } rootProject.buildDir = '../build' subprojects {     project.buildDir = "${rootProject.buildDir}/${project.name}" } subprojects {     project.evaluationDependsOn(':app') } tasks.register("clean", Delete) {     delete rootProject.buildDir } 

can any one help me in solving this problem . i am also giving you the complete error code that i am get in cmd

PS C:\Users\hp\Desktop\myprojects\tripp> flutter build apk --release FAILURE: Build failed with an exception. * What went wrong: A problem occurred configuring project ':google_mobile_ads'. > Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.    > Namespace not specified. Please specify a namespace in the module's build.gradle file like so: android {          namespace 'com.example.namespace'      } If the package attribute is specified in the source AndroidManifest.xml, it can be migrated automatically to the namespace value in the build.gradle file using the AGP Upgrade Assistant; please refer to https://developer.android.com/studio/build/agp-upgrade-assistant for more information. * 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 2s Running Gradle task 'assembleRelease'...                            3.3s Gradle task assembleRelease failed with exit code 1 PS C:\Users\hp\Desktop\myprojects\tripp>